Good affordable TV for current gen gaming?

I was planning on buying a PS4/ Xbox One later on this year, but I'll also need a new TV as well. My current one is fine for regular TV watching and playing my 360 on (which is why I never bought a new TV), but I figured I might as well buy a new TV if I am getting a new console for the full experience.

I just need to know the right one to buy. My current standard TV in my bedroom is about 16-17 inches across, and I think that's pretty good for my room (won't be going in the living room). A TV that's like 30 inches would be way too big for my room, but I am not sure if you can buy one that's like 22 inches that would still be alright.

Just a little more info about me:

- Whatever console I buy, chances are I wont be playing many if any multiplayer games on it. I never buy shooters like COD or Battlefield or Halo, and I mostly play RPGs like Skyrim/ Witcher, or action adventure games like Tomb Raider or Dishonored. I am just not a FPS type of guy, and the seldom occasion that I do play a shooter its in Far Cry or GTA V. So basically I don't need the best frame rate ever or anything like that. As long as the game runs smoothly and there is no tearing or anything like that I am fine.

I also live in Canada if that matters. Thanks for the help!