I have the Toshiba. The picture is very good and the TV is very thin but the sound is bad even by LED TV standards.
I have a 60 inch sony nx810 and the sound is like an old a.m automobile radio, thats how bad it is. I dont think you can pack good spekers in a slim set. I recently bought a 29 inch vizio, very thin it was good but I traded up to the 32 incher. The 32 incher is about 2 inches deeper but the sound is good. FWIW these slimTvs dont have the greatest sound so you get a sound bar or external system if you cant live withit. Good Luck. Check out the avsforumdotcom. Lots of info.