For speed then the F4 rules but F3 offers better £/GB.

So it's like all these other high density 7200rpm drives. High transfer rates in exchange for horrible seak times and IO performance.
320GB F4 is the best bang for buck drive pretty much assuming you don't mean GB/£ as obviously the 1.5TB drives are better. But this is the best cheap drive for an O.S.My 320GB F1 has failed recently, whats the chances of getting one of these back as RMA?
