What you really want is either the Raven or the Raven X2, and the DVD. The DVD will teach you a number of additonal effects, and most importantly, the open hands sleight that will show your hand empty before and after a vanish.
I use the move to vanish and re-appear coins. It's great.
As for the difference between the X2 and regular? If you want the ability to switch items, go for the X2. It has two magnetic heads instead of one. Which makes it great but that's the only difference between the two. If you're just interested in vanishes and re-appearances, go for the origional Raven.