Caviar Green vs Scorpio Black performance

[Deusch User]

I'm searching a fresh hard drive for usually for storage but occasionally also for test and i'm indecided to buy a Caviar Green WD5000AZR ( 1 platter - 1 head ) or Scorpio Blue WD5000LPVT.

I know that generally the 2.5" models performance is not like 3.5" desktop version but Caviar Green is not a fast HDD, so i would know what is better in performance.