I buy and drive a lot of cheap cars and depending on the quality of the car, that determines whether I buy OE or aftermarket parts.
I recently bought a beater Mk4 Jetta and the entire front end needed to be redone. I bought Üro Parts brand control arms and tie rod ends. The price was dirt cheap but the appearance of quality seems to be there. The A-arms had "Üro Parts" laser etched into the finish and the tie rods have the name clearly marked on the top. I wouldn't expect a low budget China made part to go through such trouble to brand their parts.
I also bought a water pump for an older mk2 era car. The pump has a metal impeller and the appearance of quality but the price point was also dirt cheap.
I found some hate for Üro Parts on the Bimmerfest forums but that was from 2007 and appeared to be resolved by the supplier.
Are Üro Parts a good source for parts on beater cars?