I like the diamnond file on the Letherman PST2 (that's the best file on any multi tool IMO), the changeable wire cutting blades, and saw blade holder on some Gerbers (the Urban Legends), and the scissors on Gerbers seem to be the most durable. The Swisstools are very solid as well. My favorite is the Gerber Urban Legend 700. My only complaint is that the handles are aluminum, and make the tool thicker. I've owned or own another Gerber with the sliding head, a SOG Powertool, Leatherman PST2, Leatherman Supertool (older model) and a Swisstool.