Cougar was saying that any cam with spinning heads won't work (I think). That's not quite true. Hard disc spinners don't for sure - the hi freq. vibes are bad juju for some reason - but tape based spinners do (there's a spinning head that records/plays on to/from the tape). He is correct in stating that the memory card or stick types work, but as yet, they can't store the same amount of 'footage' as the tapes do. Well, last time I checked, anyway. The storage seems to double every 3 months, so I could be outta date here.
I've used all three and owned a hard disc and my current Canon Elura 80 which has tape and card capability. Tape, IMO is the way to go for MC vids.