I am looking for an external hd for my MBP. I would like a 7200 rpm 500 gb usb2, firewire 400/800 spec. Some that I saw were a Freecom HardDrive Pro, a Western Digital 500GB My Book Pro, and a Maxtor OneTouch3 500GB. Could anyone please advise on which might be a better choice? Are Freecom drives good quality? Thanks for any advice.