@rjz ... This will actually by first system I've built. I am a college grad in network security and cryptography, but never have really gotten hardcore when it comes to hardware. So far I have purchased: ASUS P5WD2 Premium mobo, P4 650 3.4/2M/800MHz, Antec performance TX640B case and a Plextor PX-740A burner. I got a 19" Samsung LCD along with a Radeon X300 SE for $300 from a friend all brand new. The only things I lack like I said are the RAM and HD. @nmX ... I have been going back and fourth like I said, I know the Ballistix has tighter timings and will most likely be the better buy since they are both almost exactly the same price. As far as the Raptors, I didn't know they weren't a TRUE SATA drive?? Is there performance loss due to the PATA/SATA conversion?? This is another thing I have been debating on as my mobo supports TCQ (Tag Command Queuing) which is supposed to give better performance than NCQ drives. So, its either the Raptor or a bigger size TCQ drive. So all in all, I am really still only stuck on which HD to get.