SOG makes some excellent knives and multitools. I have a PowerLock which has lasted a very long time, rock-solid (SUPER strong pliers/cutters). I've since delegated my Leathermans (a Charge TTi in black oxide to pack carry).
I am a knife tool nut and carry SOG's Trident Tanto in all all black daily. Best folder I've come across (even in the $300 range) for my uses.
I wanted to get a PowerAsssist also, but after receiving it, it was very lacking. The same compound leverage system exists, but the entire assembly is very loose and bulky, also missing many tools from the PowerLock line. The Assist is a cool idea...but who is going to carry a heavy steel multitool for the quick blade access, especially one so inferior to any other folder (a weak point in all SOG multis unfortunately). Have you checked out the PowerLocks? See if you can try opening/closing and operating them side-by-side, you will understand why I, and the others above, mention the PowerLock. It's the best Multi I've found, and though I keep finding and buying new multi's, I will always carry the PowerLock.