You know about my SSD;s so i will say this. OCZ drives rock. Yes they are expensive and i have no regrets. Their support forums are awesome. But if i could do it again i would go with these. They are slc drives and are super fast. The 60gb and under are usually mlc drives. I think 2 of these would come very close to my 4 60gb drives. Do you plan on using your onboard RAID? With any luck you have a ICH10 controller onboard.
OCZ 120gb SSD's