I dont think you need quadro cards for their ECC memory. Unless you do some really serious work like making models of buildings or intense calculation where you cant afford any faults or errors caused by the card, there's no point in buying a Quadro. Gaming cards are the one you should aim for
userbenchmark's results are only reliable on cards with many users, giving a huge data size because everyone's machine are different and they dont give comparisons on cards in an otherwise same system.