I'm looking to replace a 150GB Western Digital Enterprise class Raptor drive which has served me faithfully for almost 5 years but is now starting to make intermittent clicking noises on boot-up and during use, suggesting it is on its way out. I'm looking at getting a new 1TB disk to replace it. I'm using a EVGA 122-CK-NF68 (Socket 775) motherboard with the most recent BIOS. As far as I can tell the board supports SATAII. Not the newest of systems I know but my intention here is to prolong the life of an existing system rather than select a drive for a new build system. Wondering if anyone can recommend any particular makes of hard disk. I was looking at the 1TB Samsung Spinpoint F3 which on the whole gets good reviews. However, I've also seen reports about batches of this drive escaping into the market which are either DOA or die shortly after use. Also looked at the 1TB Seagate ST31000340NS Barracuda ES.2 and the 1Tb Western Digital WD1003FBYX RE4 Enterprise but can't seem to find reviews which compare noise levels or heat output from the drives. Anyone able to recommend any drives from personal use?