Alright, so here goes.
One- fantastic ebook with many effects that you will use. This is my top choice.
RIP- A nice TNR, but it requires two things, one is a bit difficult to make, the other a bit expensive to get a good one.
Irriversible- I don't have it, so I can't say. Sounds pretty good to me, though.
Cut- The idea seems a bit much just to force a card. I would say stick to crimps and normal forces. Unless you like gimmicks.
So all in all, I think you will get the most out of One.
//David.Misner::