man,
this topic has been discussed at nausium. You are going to get all kinds of recommendations based on preferences and stuff.
Multiple threads on this issue (no offense to you RB) all over the place and I myself have tried several. Mothers, Bomb, meguiars, the tool box stuff from Lowes, and several others picked up from shows here and there.
Never really found one that was better over another IMO. Not one was easier to remove over the other, none shined better than the other, etc...
The only one I've heard that is pretty good is that zoop seal stuff that Gas seems to like alot but it seemed like a significant amount of work and time investment in going that route.
I would ride to pep boys or the store of your choice and just try one like mothers or meguiars. They're not too expensive and have given me pretty good results. If you like it, stick with it. Don't fall into the trap of 'this one might be better..' and save your money just keep using it.