Do I need a dedicated tv for console and general use? And quality concern.

iPwnz

Brutally Honest
Skilled
I'm thinking of getting a used PS3/PS4 for playing only fighting games like Tekken 6/7 and other affordable exclusives.
I already have a PC monitor.
How much do I need a flat tv? I don't want something costly. And I don't think smart tv is a good idea. I just want a hassle-free tv which lets me play console on it without any problem and for the rare cable watching when I need.
Also something which really concerns me is the quality. So in our family we've had two flat TV's one from Videocon and the other a Samsung. Both died. Repairing cost didn't make any sense. One of them had discolored vertical lines on the screen. I noticed that this seems to be a pretty common issue. Two of my neighbor's TV also had such problems. One was an Mi and the other Sony. The Sony costs like 50k when I checked.
Has anyone else come across such problems with their flat screens? I asked our local electronics dealer and they said not to go for Mi TV's because of quality issue. I know, many other brands are also affected.