I'll vouch for the loose handle problem, though it doesn't seem to effect the pliers once they're open. I can't say that either knife blade opens any easier than the other, and they both could stand to be a little looser.

Assuming size isn't a major concern, the best 'cure' for a Wave is probably a Gerber Legend. Definitely a handful, but they feel solid and you won't be afraid to squeeze down on the handles if need be.

I have a Swisstool as well, that lives in my flight bag. Nice and beefy. Not a bad investment if you don't mind digging the knife out with your fingernail.