Hi, I'm looking for a 3.5" HDD (For a media player),one which is either SATA I or SATA II. I'd like it to be 1TB minimum. In regard to the rpm I'm not sure whether it makes a difference with a higher rpm. Obviously the more the better but is there any negatives of say 5400rpm in general. And would higher rpm be more suited to watching High quality (Blu-ray) mkv's or does it not really matter. And obviously for as cheap as possible. Thanks, any help is really appreciated.