This is basic information, but a good roundup of some DVD and hard-disk based camcorders and how they don’t work on the Mac: “Tapeless Camcorders and the Mac.”
So if you’re an avid video maker and you plan to continue editing with your Mac, I’d say the safest bet right now is to stick with MiniDV. Though MiniDV is considered relatively old technology, camera makers are still producing excellent MiniDV camcorders (the Panasonic PV-GS320, for instance). I’m optimistic that Apple will eventually add support for recording formats used by HDD camcorders to its video-editing apps; I’m just not sure when.
