I agree with lxi almost entirely. I have a 40GB and 17GB HD, and I'm thinking about getting a 60GB 5400RPM Maxtor as a big, cheap, albiet slow way of relieving stress on the other two drives. If you don't have a fast connection, don't use mp3s, don't install too many games, don't download programs of "shady" origins, are strapped for cash, and don't think there will be a reason to have a big drive, by all means get a 15GB, but almost everyone in this forum falls into one of those groups. p3 700 @ 933 is no garuntee, but it is the best performance for the price, ditch the i815, get a BX though. Get the 17" only if you have no contact with larger monitors, if you start using big screens at work or something then you won't be able to live with 17". Besides they only cost $300 now. GTS is still a good buy for a $1500 system, MX for sub $1K.