Need a 4k TV/Monitor

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Hey all,
I'm looking for the cheapest and dumbest monitor I can find that:

1) has good picture quality
2) has 4k resolution
3) is at least 45"-class

I DO NOT WANT A SMART TV. I already have an HTPC, and plan to upgrade to a kodi-based setup that can run 4k soon (my current setup is only good for 1080p).

I just want the biggest, dumbest screen with good picture quality I can find. Cheap is a plus, but it absolutely HAS to be a dumb TV. If anyone has any ideas, I'm excited to hear them. I've been looking for a while, but all the major brands in the US market are pushing smart tvs hard, and I don't want the fucking bloatware roku wanna-be shit that Samsung or Sony or whoever else pumps out. I want my monitor like my women; dumb, but very good at singular tasks.

Any suggestions, /g/?