Kinda depends on exactly what each person's definition of 'best' really is. My Asus STRIX 970 is ranked last in tier3, according to that list, why? It's a solid card, decent OC if I could be bothered by that, great quality, 0 coil whine, extremely quiet, much quieter than the better ranked Gigabyte or zotac cards. So those cards get a few fps higher in benchmarks, that honestly means diddly squat on a 60Hz monitor, the fan volume is of higher importance, to me. So, what is best for me isn't necessarily what is best to someone looking to eek out every last erg of possible power at the expense of other requirements. Aesthetics, power, core clocks, noise, all different appeals.