Amongst my collection of Leathermans, I have a Blast and quite like it. It packs the tools I use, including scissors for first-aidy stuff, in a reasonably strong and reasonably light package. I happen to prefer the dedicated screwdrivers (as opposed to the bit holder on the WaveII). Paired with a stout folder, a Blast would be my current choice for backpacking.

I'm really interested in the Rebar, though, for everyday use and kits. Very well priced, and inexpensive enough that I won't cry if something happens to it. Up here, MEC sells it for $41 CAD.