I have never had a plasma my self. Prior to my 40" LED i had and 40" LCD which was great. But the picture quality in the LED is just amazing when compared to a LCD. LED is certainly more expensive, and LCDs are getting pretty cheap now too. So I would recommend LCD unless you wanna spend a bit more for a better picture and go with the LED, LEDs are also retardedly thin I think mine is at most an 1" thick.