i have a maxtor 200 gig usb 2.0 and its ok, i wish i woulda got a firewire...ive been thinking about getting an external hdd and getting the
Rosewill RX-30 U2FA external case from newegg.com. you get that great mac feel and its a great looking product...plus you can put any size hdd in it and have it run under $200 because usually internal hdd's are on sale