I'm no expert by far but bought a new TV several years ago and researched heavily. I discovered that I wanted an LED edge lit with 1080p and 240Hz. I really think the last two points are more important than LED vs LCD which indicate how the screen is lit. 1080p is the picture resolution (like your computer screen) and 240Hz is the rate at which the picture refreshes. You'll notice the refreshment rate when you watch something move quickly across the screen. If the Hz is lower, you'll probably notice a blurring or ghosting effect.
I'm not a TV junkie (I get less than 15 channels over the air with an antenna) but do enjoy a crisp, good picture when I do watch. I ended up with an LG and have been very happy with it. Hope this helps; good luck with your search!