The Linksys WRT54GL is probably the best router you can get in that price range.
http://www.amazon.com/Linksys-Cisco-WRT54GL-Wireless-G-Broadband-Compatible/dp/B000BTL0OA
What gives this router its immense value is that you can load it up with third party firmware that is far superior to anything you'll find on the commercial market in the same price range.
Even for someone that doesn't care about advanced features it's a good deal because all the first party manufacturers stop updating the firmware for older models. Check out wikipedia for more info.








