I have a Dell Dimension 8200 .. about 4 years old or so ... sitll fine
That said, if I was to buy another Dell it would be one of their top
of the line models and not the entry level teaser specials.
Gateway is said to be very good and reliable as well. But I have
not yet used one or had a chance to test it's reliability .. but I do
now that 3-4 years back, it was one of the top choices. May still be.