Have you tried gaming on a large TV? I have found mixed results, we have a beasty HTPC connected to a 55in Sony Bravia LCD. Certain games, especially first-person shooters can be horrible. It is hard to see the crosshairs on CS:Source. Portal 2 having no crosshairs was amazing.
If you can, try the games on a larger TV to make sure it is not annoying as hell. My mate played league of legends on it and just got sick of it.
Not sure what you play, just thought I would mention it. All the best finding the right TV. Also I love the TV itself, 55in is great for movies.