I don't have cable and use Roku. I bought a Roku TV. It can show regular TV as well.
https://www.amazon.com/gp/product/B00UB9UJBA/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
I couldn't believe how ridiculously cheap it was. $168 for a 32inch Tv. Considering a Roku stick is $50 and a Roku device can be $100. The TV is a great deal. It's sort of my backup TV upstairs but I have no complaints. If you want to to budget it works well. If you're not into Roku maybe look around. It's the #1 seller on Amazon (and #1 best small TV on Wirecutter
http://thewirecutter.com/reviews/best-small-tv/
)
They have bigger sizes. 55 inch 4k $429
https://www.amazon.com/TCL-55US5800-55-Inch-Ultra-Smart/dp/B01BGC39VM/
The Vizio 55 inch runs $220 (50%) more but is highly recommended
https://www.amazon.com/dp/B00T63YW38/
I often just look at the bestsellers and ratings on Amazon.
https://www.amazon.com/gp/bestsellers/electronics/6459737011/
Pretty crazy you can get a 55" Tv delivered for free if you're a prime member.
(and if you buy from our links we get a small commission. Thanks if you're feeling supportive of LRC)