Maxtor's D740X (which has the speediest seek times available for IDE) is the perfect choice for RAID0.
BUT...
I would seriously reconsider an IDE RAID0 setup, however. IDE is not the proper subsystem for a RAID configuration. You don't get true hardware RAID (unless you're looking to drop $250-300 minimum for a hardware IDE RAID controller), the drives simply aren't built to handle the demands of RAID. They tend to fail much easier and quicker. SCSI is the only choice for RAID, both from a performance as well as reliability aspect.