Ok, I did look at the forums, and unless I just missed it somehow, there does not seem to be anything on what a good wireless card would be for my laptop that I'm building

We've got an m18x alienware laptop here, it's got an intel centrino wireless n 2230 atm.
I can't find any info out there on these cards and I'd like some super nerd opinions on what card I can put in this to where
I wont notice a real difference between running wireless or being hardwired. The only info I've found were two people recommending the intel centrino 6300... If neither of these are at the top of my options here I'd like to know the absolute best choice.

Thanks Diablo Nerds!