Whatever you decide to get, pay the cashola and get 802.11N .
The Airport Extreme gets you lots of other nice tiddy bits that you may not be looking for now, but might want later.
Personally, I would run wire all over the place because you can't replace its reliability. Your neighbor may decide to get some fancy new phone that suddenly fubars your Wireless when they decide to talk to grandma on their porch for an hour and a half.


