Caught the bug with a Panasonic HDC-SD100 but editing with my MacBook Air (my first Mac and only bought for travelling). I'm told it's a miracle that I manage to get anything done on the Air, and it's certainly been a problem (having to reduce size of exported movie and wait and wait and wait).

To be honest, I'm not ready to invest time in learning Final Cut Express but obviously need something bigger to work on. I'm told a second hand Power Mac G5 might improve quality and save time, and I'll work with the limited (but okay for what I need - mostly used online but I don't want to be embarrassed if shown on a 50" screen) functionality of iMovie.

Is a G5 necessary? Or will a G4 do? Should I be looking for RAM or Hard Drive space? (Used G5 with 2.5 Gb RAM and 1 Tb hard drive for 550 - or 1 Gb RAM and 250 Gb hard drive for 390?) Or is the Panasonic just too entry level and I'm just kidding myself trying to produce remotely professional videos?