LED. Better picture more energy efficient, longer life. LCD however good as well, will start to get to your eyes. Just as staring at a computer screen will after a while. Also LED tends to have better blacks. Which gives you better contrast. and you would be surprised how often you really watch ALOT of black on you screen. think of those good movies where they are going through a dimly lit room, and you wonder who’s going to shoot 1st. poor blacks can make that just look muddy.
As far as bilt in DVD player, I wouldn’t but thats me. Convenient? Sure, but when and if it goes out do you want to send your tv in for repair, or just buy another TV?
I’m currently looking for a new TV myself. Who knew finding a TV that was well JUST a TV would be so hard? they are all either 3D, “Smart” or have Dvd players built in.