I need to buy a couple of new handheld consumer-grade camcorders for sports video motion analysis. A requirement is that they have firewire ports, which all miniDV camcorders have. It looks like all flash- and hard drive-based camcorders for sale these days are USB based. These are not capable of real-time video streaming, so it is essential that I get one with a firewire port. Anybody know where I can buy these?