I currently have two WD1200JB 120GB ATA drives that are in a RAID 1 that are big enough and seem to work fine for me. I am building a new system and wonder if upgrading to SATA 2 would be worth it. If I upgrade it would have to be to something relatively inexpensive. I am looking at the Seagate Barracuda 7200.9 or 7200.10 series drives. Would getting one of these drives be a noticeable upgrade?