I was about to get the 47" of lm7600 from Amazon but it's out of stock right now. I checked the lm8600 too and you are right that the price difference is not that much. But actually, lm8600 is $300 more expensive. If I get the 55" of lm7600 I have to pay $500 more. Now, I'm torn between having a bigger screen or a dual core.