My friend had a BTC 2x2x6 burner for over a year which he got a while ago for $120. It was probably the cheapest one available at the time. He had pretty much no problems except some cds got messed up but I don't know if that was the burner, media, or user error.
Then another friend of mine got a Pacific Digital cheap burner which went to hell in a few months. It sounds like something is physically broken with it.
The cheap burners might be good, might be bad.