I am inclined to buy Compaq 510 because it has already a core 2 duo processor, but in the real world is there really a big difference between a dual core and a core 2 duo?

On the other hand, I also like the specs of Compaq CQ40, the amd version, not only because its cheaper, but also because it has a dedicated video....But I just heard some scare stories about lcd defects and about its being literally hot temp...

I need your help...

By the way, Windows 7 is about to be officially released soon, should I wait for it?

TIA