I have been buying Seagate GoFlex drives. They have both desk (3.5" wall powered) and portable (2.5" self powered) versions of GoFlex drives.
For my pre-thunderbolt 2009 iMac I am using FW800 interfaces. For the my Macbook Air (and my hopefully new 2012 iMac) it is Thunderbolt.
|Common Flashwing by digimania|
from canon dslr
|The Marilyn impersonator by Lee8282|
from Blowing in the Wind (Nature)