As many others have said, the television(s) that comes in most trailers run(s) off 120V power. That means you have to be plugged into shore power for your plugs/TVs to work. You mentioned you wanted to do some boon-docking (as in "Camping without an electric hook-up). If that's what you meant, you might want to get a television that runs off 120VAC or 12VDC, and a second battery. Otherwise, you'd only be able to watch the television when you're connected to shore power or your generator.
One other thing: since LED technology has advanced so much, the manufacturers have stopped making plasma TV's. In order to get rid of back stock, many retailers and on-liners are offering steep discounts on plasma TV's. DON'T LET THE LOWER PRICES SUCK YOU IN! They are incredibly heavy, and the shaking will really mess up the liquid plasma. Stick with an LED.
My TT came with a 32" "Continue-Us" brand LED in the living room, with a buried wire connection to the radio/DVD Player. There was a reinforced spot on the bedroom wall for mounting a TV mounting bracket. There's also an antennae outlet at that location, but nothing going back to the DVD player. I simply installed the mount and the LED television with built-in DVD player that I had bought for my old trailer. (It came with nothing.) If you have a lot of DVD's, you may want to do the same thing. If "Blu-Ray" is your preference, you'll probably have to go with a free-standing "Blu-ray" player, as I've never seen a TV/Blue-Ray combo.
Just my 2 cents. Best of luck making your decision.
2013 Eagle 266RKS
2011 Ford F-150 w/3.5L Ecoboost & H.D. Tow Package