If I were to advise you on the Camera Mapper plug-in, I'd honestly say that if youire even in the slightest way interested in creating dramatic effects with After Effects, and camera mapping is either something you do regularly or have never done before but would like to try out, you should definitely try it out. I'll bet you will not hesitate for long to buy it.
Well, if you're interested in trying it out, download a free demo here.
Read the full review here.
If you have tried Camera Mapper and have questions, drop by the Digieffects forums and ask. The forum is moderated by Digieffects staff.