My opinion.. Go with a 6000 or 7000 series, so if there is a defect it won't eat at you as much since the cost was lower. Accept that the display you want doesn't exist at this point, or at least not with manufacturing standards strict enough to ensure 100% quality. It's not like Samsung is going to stop making TVs after this year. There will be QD LCDs next year, and maybe the yields will be more uniform.