[citation][nom]saint19[/nom]Well, now we must wait 'till the six-core of AMD and Intel to see who is the winner (90% sure that will be Intel)[/citation]
It's fairly obvious Intel will win. After all, the first gen of hexacores from the AMD stable will be 45nm as opposed to 32nm for Intel. That means they'll run into the heat barrier far later=>higher clock speeds become possible. Besides, I'm sorry to say this, but Nehalem is simply a more potent architecture than the AMD one. Which is sad, btw...
However, the Intel ones will have a 4-digit price tag, while the AMD ones will be more reasonable (I've heard roughly 300 dollars, but that's something I don't really believe).
As always in recent history, AMD will offer better value while Intel gets the performance crown.