If you do a lot of video editing, then you're going to want a very large drive a lot more than a 74GB Raptor. Sure, it spins at 10K and has pretty fast head movement, but 74GB vanishes very fast when shuffling large video files around.

Also, the Raptor drives are more optimized for random seeks than for streaming large files. I have an assortment of 8 different brands/models here, and the two types of Raptors are the slowest streamers..

I'd go for a 250GB+ drive instead, still SATA of course, simply because the protocol is so efficient, the cabling is excellent, and at one-channel per drive it hauls a**.

Cheers