It's good that you have acceptable experiences with Linksys routers. :D

Note that if you upgrade to WiFi-N, you must also upgrade your adapters to WiFi-N in order to enjoy the 300mbps network speed. In WiFi law, it's the slowest that rules. So if you let someone with a WiFi-B connect to your state-of-the-art WiFi-N network, the whole network downgrades to WiFi-B.

You can fix this by specifying purely N connection in the router interface (or G if you still have a G).