SATA and IDE hard drives are priced very closely. Usually a SATA version of a hard drive will only cost $2-5 more than the IDE. Considering you get higher more bandwidth from the SATA pipeline, it makes sense to go that route.
As to the controller to use, I like Promise controllers because they are generally easier to set up. Since SATA is still pretty new, you shouldn't have to worry about updating the BIOS of the RAID controller right off the bat.