Do we have to by a special type of TV?
Two answers: The most significant is NO, you do not. Any home type TV will work, My Class A back in the old CRT days came with a pair of Toshiba's which you could get straight off the shelf at Best Buy. Nothing special at all about 'em save the way they are bolted in. (more on that later).
I replaced one with an off the shelf from Best Buy Samsung.. It died of old age
I replaced it with a off-brand from Wall*mart and since I need both a computer monitor (it is) and a TV (which it is when it is not a monitor) at the same time in that room, I added a new Samsung from Wal*Mart "one of a kind missing stuff) shelf (No remote, but my old samsung remote...you guessed it.. it works).
Answer 2: Some folks like to put 12 volt TV's in RV's for when you are "off the grid" If you like to be "off the grid" you might consider (Oh, the new Samsung, 12 volt, uses a power brick converter normally).
Note on mounting:
The old CRT jobs had custom brackets bolted to them and you had to be careful where you drilled holes for the screws.
The new flat, wide screen, jobs have standardized mounting threaded holes in the back so all you need is the proper bracket,, Or on the one I have I remove it to the partifully filled laundry basket when I hit the road.