Go to a store that sells LCDs and LEDs from different mfgs. Examine the pictures, news, movies, etc. on the screens. Choose the one that you like best.
I personally prefer Sony brand name in TVs. I have four Sony LCD TVs at home, 40" Home Theater, 32" living room, 20" kitchen, and 22" glass-walled balcony.
I believe Samsung, Toshiba, Panasonic, and LG brand-names are good, too.