Maybe its different in the US but in Australia, dell computers are more expensive and pretty average quality parts.
I strongly recommend not buying a dell, or any brand name computer for music recording. You will get more bang for your buck if you go to your local computer shop and have one built for you. If you go to a computer parts wholesaler, and buy the parts, most places charge a very small fee to put it together.
It will be a bit of effort, but get the exact specs of what dell has on offer including what type of; mobo, brand ram, brand HDD's and cache size, vid card, power supply and anything else you can think of, and take that list to a local computer shop and see what they can build the same machine for. I really don't know why anyone buys brand name computers any more.
Am i alone on this one?