What do you want it for? I know that sounds like a silly question but there is much that can be done with the NAS Luke: http://www.qnap.com/pro_detail_feature.asp?p_id=83
If you just want storage then fine go for the best price. I think I'm the only one in this forum that whines on about having RAID 1 but that is a consideration for me. As I've said in a recent thread if I'd known about those Qnap NAS boxes before I built my file server I would have gotten one of those.