I have had a bunch of multitools over the years. The best of the ones I've owned, by far, is the old Leatherman Wave. I retired my old Wave, because it was pretty beaten up, and I didn't want to ruin it completely, or lose it. The new one's still pretty good, especially the higher-polished "anniversary edition", but it's just not the same. It does retain the three most useful tools from the original for me- the saw, the diamond file, and the beefy wire cutters.
Another of my favorites is the Vic Champ. That thing's a curious creature, but useful!