I've tried just about every multi-tool out there and settled on a Victorinox Swisstool Spirit X. It has all the tools I wanted, and the quality on it blew my leatherman/gerber/sogs out of the water. It was so much better that I gave away all the others except my Leatherman Charge TTi which is my second favorite.
If you carry in pocket like I do, then you will appreciate that the Spirit is fairly small and thin compared the the other brands without giving up any of the functionality. The good leathermans have a nice bit driver, but I found that I never carried the extra bits anyway since I don't use the belt sheath.
The only downside I could find on the Victorinox is that the knife blade is not one-hand opening, but that doesn't bother me because I always have a real knife with me anyway.