SATA isn't the sort of thing I'd buy another HDD to replace my IDE drives, but when buying a new drive, I'd make sure it's SATA. When I got my first couple of SATA drivers a few months ago, I was really paranoid about the cables coming out, especially because I keep the side of my computer open. Nothing's come loose, it's a lot more secure than it looks. I don't notice any speed difference between my SATA and IDE drives, but there probably is one, just that I don't pay attention...