LED vs LCD

My friend decided to ask for my help in deciding what is better for shop: LED vs LCD?

There are about a dozen pro/con for this debate....but in a nutshell this is how i settle the argument and made him go for a LCD:

37" LG 1080p LCD 579$ on special at BESTBUY.

vs

40" Samsung LED 1080p for 999$.

YES LED is more energy efficient (but only if you have 6 of them on at same time....if its our only TV and you use it no more than 2hrs a day...your basically saving less than a 1$ - i say 0.50$)

However do you see that price difference?

What if you want a bigger LCD? then your not saving and you should go LED....

42" LG 1080p LCD 819$ @ BestBuy....at that point I'll buy the Samsung LED because it has better image at that point...more color...etc etc..

So all in all...its about the green $$$.