I have an 18 and a 16 Y/o. There's a computer in the house, but we need a 2nd. The computer we have is a Dell XPS 210...have had numerous problems and tech asst ranges from pretty good to downright incompetent.What would you recommend I buy for them? ....I want as inexpensive as possible. I would prefer a desktop. Dell or HP? Any other suggestions? Thanks for help.