Stay away from dual channel if you have the i7s. Get either the 6gigs or the 12gigs. HOnestly with 6 gigs I havent been able to fill it all up no matter how much I have tried to fill all the 6 gigs, so 6 should do you fine enough.
Tag(thx fkusumot) - "Yet again I completely fail to see your point..."
HD vs Wii, PC vs HD: http://www.vgchartz.com/forum/thread.php?id=93374
Why Regenerating Health is a crap game mechanic: http://gamrconnect.vgchartz.com/post.php?id=3986420
gamrReview's broken review scores: http://gamrconnect.vgchartz.com/post.php?id=4170835