Camera and FCP

Right now I film a few dance recitals a year and the occasional project of my own or a friends. I use a Sony TRV950 and FCP 5 on a PPC and everything works fine. I recently bought a new iMac and downloaded the 30 trail for FCP X (which I havent launched yet). I am wondering do I upgrade to a new HD camera and buy FCP X or just keep using what I have been using? If I upgrade, what camera would you suggest? Also, what changes to my workflow will I need to make as far as getting footage to my iMac? Thanks for all your suggestions!

Step one would be to open the FCPX trial and see if you like using it. Then you'll have a clearer path about which way to go from there.