Interestingly, and very timely, PCWorld just did a wireless router comparison. In their tests, they rated Belkin and D-Link on top. One had better short range performance and one was better long range. The price is the same at $100 retail. I have no personal experience with Belkin so at the moment I'm leaning toward staying with D-Link. Both have a USB port for NAS and gigabit ethernet.

I started out with nothing & I've still got most of it left
M60 VP160 QS8 EP350
M22 VP100
Algonquins