Is it still possible to buy 720p TVs these days ? Everywhere I look I see only 1080p led TVs, with a ton of shitty add-ons that I don't really need when all I want to do is play Wii games on it ! Internet, 3D, eco-solution and so on, are just another useless reason to make you pay more and shop for a brand new TV.
I'm sure my Wii would look better on a cheap 720p TV if i could find one, but instead I had to get a quite expensive 1080p Samsung LED TV !!
Anyway, I'm sure I'll enjoy my TV set to the fullest when I'll get the Wii U, or whatever it'll be called.
For the original question, for my gaming systems I decided to go with a 22" TV.
Small , isn't it ? The reason is that originally I was a PC gamer, and I was used to play games on my 22" monitor, at night , on my desk ( fairly close to the monitor ) and with headphones on. The effect was a totally immersion in the game. I felt I was living inside of the game when I was playing the original Bioschock , Batman AC and any COD game.
Now my PC is sadly gone, so I decided to buy a small TV instead ( with all the connections that my monitor didn't have, like component, composite,s-video, VGA, HDMI ) so I can play console games on it just like I used to play PC games. And it works fairly well for Wii games, because the screen is so small, games look somehow sharper on it.
But that's my personal preference.
If I had a bigger room and some more space, I would go with a 40" TV, so that the level of ' immersion ' would be the same even sitting on a couch a few feet away.