There is no router that works 2 times better than the rest so one is much like the other.

I don't know what 11n is. We do see 5.4 or "5" GHz (for consumers we let them be inexact) and the problem I find at 5.4 GHz is reduced range as the absorption is higher or penetration is lower (you pick the words.)

I have one of the Netgear 3000 N routers and it's fine. I would get another by them.

HOWEVER!! Many don't want to be their own IT staff or learn all about IP networking and more. Be sure you like to figure out the puzzle.
Bob