I do a fair bit of traveling for work, and invariably end up repairing a lot of guns in the process. My Borka set is invaluable for sure, but I also have it augmented with a few punches, a 4" wrench extension bar, AP brush, angled forceps and my Leatherman Wave. The Wave hardly gets used though, last 10 week trip it didn't get used once for anything other than a hammer as the two tools I carry in my pocket work better.
The first I carry every day for the last four or so years is the now discontinued Emerson EDC-1, it was replaced by the EDC-2 (same tool minus the wrench piece), and is a cooperative effort from Emerson and Multitasker. It has a blade with Emerson's Wave, phillips and flat screwdrivers, and best of all is a very sharp awl/scraper tool. The tools are tough as hell with my blade still in great shape, although this last run I leant it out and it came back with a bent awl tip, last time that guy touched it and another lesson learned... Street price of the EDC-2 is around $125, and is worth every penny.
The second tool I use the hell out of is a Leatherman Freestyle, the small type Leatherman with just needle-nose and a combo blade. I got this as an anniversary gift from my old company, only had to work for them for five years to get it! Anyhow, the small footprint of it is perfect for the pocket, and I found the smaller pliers are far better for working on weapons than a standard size Leatherman Wave. Replacing extractors, picking little bits out of rifles, clearing nasty double/triple feeds, cutting springs down, it did it all. It's comfortable in the hand too, and nimble for delicate work. At $40, it cannot be beat for handiness at a low price point.
I have a monster sized Leatherman SuperTool I bought for the range bag prior to the MUT being released, it hasn't seen the light of day in years. Now that I think of it, I probably should just sell it in hopes it gets some kind of usage. I really like the MUT as well, but with the Borka set and usage specific punches, I see it more as doing a lot of things but none of them well so I won't be getting one myself. My co-worker that had a MUT asked to borrow my tools more than a few times, at least he wasn't the one that damaged my awl tip.
