I'm going to be purchasing an external hard drive soon as a time machine HD. I have one of the new iMacs, so I'd like to get a drive that supports Firewire 800. I'll probably get one that's 500GB or 750GB. I like Seagate, but I don't think they carry Firewire 800. The apple store recommended the LaCie d2 quadra 500GB, and I like that it's stackable, but I'm concerned by the c-net reviews. Many people (including the official review) are saying the customer service is bad, and the hard drive itself doesn't have a high rating by many users. I've never heard of LaCie, but the apple store says they have primarily made HDs for graphics professionals. However, PC World thinks it's the #3 external HD and has great user reviews. Fantom Drives look good except for a below average 1 year warranty which is not acceptable when compared to the competition. The salesman at the apple store said he hasn't had great experiences with any of the Western Digital drives. And I just don't know about Iomega. So what do you guys recommend? Edit: or should I consider an external enclosure?