Which of these two external hard drives is better?

[Jskid]

Different stores tell me one or the other is discontinued.
Seagate Expansion 1TB USB 3.0 Black Portable Hard Drive STBX1000100


vs


Seagate Expansion 1TB USB 3.0 Desktop External Hard Drive STAY1000102

 

[Dessert Tears]

The major difference is that one is 2.5" (Portable) and the other is 3.5" (Desktop, has an AC adapter). [thread=2277260]This recent thread[/thread] has some discussion on the differences between the form factors.