I've had
eMachine: Horrible IMO. Slow, just not very good, but a cheap price
Toshiba: My laptop. I hate it.
and about 20 computers from my dads old work that are still running 15 years after. They're slow but we haven't had much go wrong. We don't use them regularly though.
Compaq: Decent, wouldn't buy though
Dell: Don't like at all. Frogot why though
Gateway: :barf: