Fact: MiniDV tape continues to provide the best available video quality and will be aroud aas long as that quality differential remains and memory cards are expensive for equivalent record time..

My opinion:
HDD (Hard drive based camcorders will be aroud for a bit, but will go away in favor of memory card units like the CX7. Memory card and HDD quality are the same and take a back seat to miniDV tape for now.