Living in the US, I have been buying my computer stuff from CompUSA as their prices are very low, especially when you catch the sales. A few months back I bought several Maxtor 250 GB SATA drives for $129 each! I devote one drive to Poser and one to Vue, so I have plenty of expansion room. I tried out the built in Promise RAID card on my Athlon and had the two 250 drives in a RAID configuration for about a month- but it actually seemed a little slower- so I reformatted them back to single 250 GB's and I think they actually run faster that way. Plus I was always a little worried about the possibility of a RAID crash and losing a lot of stuff- so I like the single drive system better and feel they are actually more secure and reliable that way. I think RAID is best used by people doing large animations, and then only as a temporary workspace for assembling their finished project. I still don't trust RAID for longterm storage, unless you make everything fully redundant-- so you might as well use single formatted drives anyway. But- if you are into animation- then RAID, in some variation (0,1, etc.) is probably the way to go...