Can I ask where you ordered that drive from? That's a pretty good price, and I'm in need of a new backup drive.
I'm getting it from http://www.cclonline.com - its just down the road from me (well, not walking distance but not that far that I'd use mail order)
You won't gain any performance between SATA and IDE, but you can buy drives that support both SATA and IDE ;)
I'm not bothered if its no faster than IDE. I'm just futureproofing, is all.