The TTi is the fifth Leatherman I have owned and it is, by far, the most expensive. It is also the largest and heaviest tool I have. The weight is primarily a function of the sheer number of tools it has, but also due in part to the locking mechanisms on each handle of the tool, something I am not sure is entirely necessary. The idea behind the TTi is that Leatherman has taken all of the best features of its tool line and all the best materials and put them into one tool.
There are three versions of the Charge, the TTi (link below in its usual spot, the "here" paragraph of the review), the AL, and the ALX. The AL and ALX have aluminum handle scales, as denoted by the "AL" in their names. The TTi, meanwhile, has titanium handle scales, a nominal weight savings of .1 ounces. There are two other important differences. The AL has scissors while the ALX has a safety hook on the back of the serrated blade. The TTi has both. Additionally, the AL and ALX blade is made of 154CM. The TTi has an S30V blade (yes, the blade steel on my best multitool is the same steel as the best knife I own). The TTi comes in two versions: a leather sheath version or a nylon sheath version. I got the nylon sheath version as I don't like leather sheathes (poor winter weather performance). On rare occassions Leatherman will sell the TTi with all of the accessories--the bit extender and all of the bits. Those packages are not readily available, but if you can find one, they aren't a bad buy.
Here is the TTi's product page. Here is a good street price (temporary sales price of $88, about $10 less than normal, but I have never heard of the site, so buyer beware). Here is a good video review (it is of a Caleba's edition, but the differences are minor). Here is a good written review. Here are the Amazon reviews. It has a rating of 4.38 stars out of 5 with 73 reviews. Here is my TTi:
Just because you can, doesn't mean you should and with the TTi Leatherman seemingly ignored that maxim of good design. I am not sure why all of the tools have to lock. I get the blades and files on the outside of the tool, but all of the interior tools do as well, for no apparent reason other than Leatherman thought it would be neat. It is nice that they do, but entirely unnecessary. Additionally, it adds a lot of weight and complexity to an already beastly device. The TTi weighs in at more than half a pound (8.2 ounces to be exact) and that weight, at least some of it, comes from the entirely superfluous locks. The design is very nice other than that, though. The externally accessible tools are all the right ones and the blade is GREAT, both in terms of shape and materials. There is nothing about the design, other than the locks, that I can even begin to fault. This is the Cadillac of the Leatherman line and its design shows that--big, full featured, and smooth. It is not as taut or minimal or as radical as the Skeletool, but this is still one really nice tool. It is massive and thick:
but quite nice. The score of one is solely because of the unnecessary bulk. And in the end, I was close to giving the TTi at two because, as you will see below, the bulk turns out not to be that big a deal.
Fit and Finish: 2
If the threads are a great place to check a flashlight's fit and finish, and a lock or grind for a knife, the pliers are a great place to check on a multitool. You want pliers that meet flush at the very tip and, if you can, wirecutter jaws that don't meet, but shear past each other. The only multitool I have ever had that did both is the TTi. Even the Skeletool, which is a nice multitool had a decent set of pliers but barely shearing wirecutters. With the TTi there is no question the wirecutters will cut (and boy, do they ever).
The rest of the tool with all of its unnecessary complexity is equally well finished. The handles are rounded and don't produce hot spots or cause fatigue.
The multitool is unquestionably designed as a toolbox replacement. The only thing missing is a hammer. With so many tools and attachments and accessories, the TTi comes very close to being the only tool you need. I carry mine in my survival bag, along with the RD-7, and together I feel like I have most of the bases covered (I also have a collapsible wood saw for felling branches and the like). The massive number of tools fit together in a package, that while large, is not so big it can't be carried as an EDC. I did that for about a month and it wasn't that bad at all.
Some of these larger multitools are so thick and bulky that they make it hard to get a really good grip. The TTi is not quite that big. If you have especially small hands I can see it being a problem. Still for most people this is a very nice sized tool that gives you leverage in a bunch of different positions.
There are two carry options for the TTi. First is the excellent Leatherman nylon sheath (there is also a leather sheath, but I opted for the nylon one because of leather's tendency to hold water and freeze in cold weather):
Second is the removable pocket clip.
When I was EDCing this beast I used the clip and I have to give kudos to Leatherman for an ingenious design, using the tool locking mechanism to hold the clip in place is brilliant. The clip is also well designed, a low rider with plenty of grip. When EDCing the TTi the clip was fine, but the weight was a bit much. I am used to very minimalist carry--an Aeon and a Dragonfly II in FRN. Together they weight about 1/3 as much as the TTi all by itself. I can see some folks EDCing this bad boy, but it is a bit heavy for me. This is more of a personal preference so I am going to keep the score of 2 as a reward for an excellent set of options, but this is a beefy tool. If it de-pantses you, consider this a warning.
Here is where the TTi distances itself from the competition. There is really nothing close in terms of materials. S30V on the blade is insane and appreciated. The titanium handle slabs, likewise, seriously outdistance the competition. In the end, the TTi laps the multitool world in terms of materials. I'd give it a 3 if I could. This is the high water mark for all other tools.
The clever cuts and corner reveals on the exterior handles allow for two tools to be one hand opening (the knife and the serrated blade) and the two other tools are easy to get to with two hands. On the interior everything as a little spur to catch a fingernail, except for the can opener which has a nail knick. Nothing is hard to get to and everything works very well on its way to the locking open position. Everything on this tool locks and yet it is not hard to use, open, or close--a great layout by Leatherman.
Retention Method: 2
The clip here, covered, above, is genius. I love it. Nothing at all I would change. I love the fact that you can remove it without tools. BRILLIANT.
Tool Selection: 2
Nothing is missing, well, except a hammer and hammers on multitools generally stink. I truly love the safety hook as a package opener and rope cutter. I love the eyeglasses screw drivers which have a variety of precision uses. Even the can opener, which I hate, is not that bad at slicing open clam packs.
Tool Performance: 2
All of the tools perform quite well, but it is the knife, the scissors, and the pliers that deserve high marks. The pliers are just amazing. I wish they were spring loaded, but other than that I wouldn't change a thing. These pliers rival the finest stand alone pliers I have in my workshop. The blade, likewise, is a great shape and length. Finally the scissors are incredibly sharp and surprisingly tough. Overall, everything works exceedingly well.
Overall score: 19 out of 20
I debated this score for a long time. The locking mechanisms for the internal tools is entirely unnecessary and adds weight, but in the end it didn't really impact the carry of the tool, in part because of the perfect pocket clip. But I still want to dock it a point. There is no reason for the weight, but that is the not big issue here. It is a small problem for an otherwise truly superior tool. The design, other than that one thing, and the materials are second to none. If you want one tool to handle 99.99% of your tasks or you are looking for a full sized multitool, the TTi needs to be on your short list of research targets. In the end, I'd be surprised if you bought something else. This is a great tool.