Compag makes a good system, but i'd stay away from their home computers. They make nice powerful work machines though.
I worked for Dell for years so i am a little biased and usually reccomend them. If you are buying a nice system, fairly loaded i can most likely get you a good deal. hit me up on icq, and ill give you a number to call. Check out
http://www.dell.com/ca/en/bsd/produc...dimen_8200.htm
and
http://www.dell.com/ca/en/bsd/produc...rkstations.htm
the second link is the best of the best, wicked system.