Ive had two dells wich where ok better than any other computers ive owned or used. Ive had very little problems with them.
One computer builder that I highly recommend which is not on the list is E-monster GREAT machines, if they where as big as dell they would realy cause some trouble for Dell, I have two of those right now I have never, I repeat never had a problem with them, a friend of mine has had his for 3 years its just a P3 at 600 mhz and he never had a problem with it so thats one you should look at when buying a PC>