I use a leatherman wave and have gotten fantastic results. I've never had a problem with it bending or breaking, perhaps some like to torture their tools needlessly, meh.

Anyway, I've never found the weight on the belt sheath to be a problem, the blade stays sharp (personally, I like a nice moderately sharp blade to some of the razor and wire edge fans here,so I don't sharpen mine quite as regularly, but my that is just my personal style.) and the reliability has been great, no problems with mine. I haven't had the chance to check out the swiss tool yet so I don't know if its performance is a significant step above but I hear good things. Not trying to sell the wave here, just giving you my experiance, just check them all out and decide for yourself.