TCL are the biggest pile of crap TV's on the market. you'd be lucky to own one of those TV's for 3 months without something going wrong and the customer support is horrific. I owned one of these TV's 2 years ago and I can't even tell you the list of issues I had with it. from TV flickering to sound issues to almost non existent customer support.
Yep, as long as there is no 4K content, and that might take a while (no reason to start shooting everything in 4K, not untill it is the mainstream).
Its just smarter to get a full HD tv now for 300 and then a quality 4K Tv for 500 in... say 2 years when its actually a mature technology (thats why companies charge crazy prices for new tech, so that for a while it feels like only rich people can afford it, same as when iphone started out as a VIP product).
Personally, untill GPUs cant handle 4K, I can wait. I have watched movies in Dvd and blue ray quality, and while i can notice the difference, its not worth paying a 50% price increase for EACH movie I want to buy.