I love Buffalo's, with built in heat sinks, you can't go wrong.
@slavingia I don't see why you are saying WD is "sexah", I could careless about how the drive looks, as long as it stores data. I just store mine in a drawer and I never look at it. The thing that Buffalo's have is built in heat sink, fans, as it says 37% faster (it's true, I compared copying 2 1GB zip archives, and the Buffalo was far faster).
Western Digital's aren't bad choices, but I think you can get more bang for your buck, Buffalo's also have firewire included which is nice. WD I had to pay $50+ to get a bigger size to have firewire.