I guess its subjective to each buyer but I personally avoid Gigabyte, Inno3D, Zotac, Galax, Colourful etc., basically chinese brands, I find them cheap material (pun intended) and won't run long years with peace of mind. The Taiwanese ones like Asus I believe in because I have used one for 8 years and still going on with not a single problem. (touchwood)
In my history, I had to RMA two Zotacs back to back, the RMA card of the original card had to be RMA'd again for another RMA card, so nope never.