I have a bunch of Seagate GoFlex drives. I like being able change the interface depending upon which computer I am using at the time. For example... my wife's 2009 iMac only has FW800 as its most performant interface, while mine has Thunderbolt. With GoFlex... I can use the same drive on both computers using the fastest interface available.
BTW: Thunderbolt is spectacular overall. One issue that you may not like is that the Seagate Thunderbolt adapter is quite a bit larger than the USB 2.0, USB 3.0, and FW800 adapters... so you may not want to use USB 3.0 when traveling.
/Jim