What's the concern about pulling the trigger on the 6 Series? Look, you know it's a "budget" TV and as thus there is a somewhat heightened chance that you'll have to return the panel for uniformity issues, etc. if you're a picky person (which most of us here are). I think it will always be that way, so why wait? The panel lottery is just part of buying a high-performance budget TV. It's the cost you pay to save the benjamins, some would say. Such is life. Whether or not that's worth it comes down to your budget vs. free time heh.
As someone already mentioned, I would expect TCL "issues" when buying a TCL display. It's not like their entire QC department, system, or effectiveness will change over the course of a year. Maybe if TCL keeps hitting home runs, in a few years their QC might change... maybe.
Sony MASTER Series | harman/kardon AVR | Klipsch Reference Premiere | KEF UniQ | PlayStation | Mohu Leaf | Hue Play | MediaLight | logitech Harmony | CyberPower PFC UPS