Mark,
Get the Leatherman Supertool. Its implements tend to be bigger & stronger than those on the Wave. That is especially true of the pliers. They are a little longer & open a little wider. For me, that's often made the difference between the tool being usable & useful for various applications versus not usable at all. It also has a crimper, awl, & ruler, but no scissors.
I had an original Supertool for several years & bought a Wave as an auxiliary. The Wave has been useful, but not nearly as much so as a Supertool. Most of the time I carry the Supertool. The Wave still makes a good backup. The new Supertool should be even better than the original with its easier unlocking & more ergonomically shaped handles. OTOH, I have gotten Waves for my wife & 12 year old son. But their SAKs do not have scissors as mine does.
Incidentally, in comparison to a Gerber (I think it may have been an 800 Legend, tho memories do fade...), I was surprised by how narrowly the Gerber plier opened. For me, the Gerber did not seem nearly as useful.
Best wishes,
John