I loved it. Piranha 3D is what Snakes on a Plane wishes it could have been. It's not just exactly the shameless schlockfest I thought it would be, it goes way, way beyond it. Depraved, gross, disgusting, bloody kills, and so much boobs and ass it's basically a porno movie. Absolutely shameless, especially for a mainstream Hollywood movie. This is not a movie that can be discussed in polite society. But here, I'll say for the interested and like minded, it's fucking great.
I thought about getting the box set, but could care less about III and IV. I would like to have some of the Fleisher cartoons included, but I think they are coming out soon in their own set, or maybe already out. Good time to be a Sups fan.