Running a Samsung F3 500GB(HD502HJ) SATA2 as my boot drive because I've heard just good things about it on reviews all over the internet + it was very cheap in 2011(June). As backup I use a 3.5" WD Elements 1TB drive(WD Green 5400rpm) and an old Trekstor 3.5" 160GB eksternal drive(also a Samsung drive in it). The F3 is used for my system(OS) and games, the other 2 drives are just used for mass storage and backup.