Help finding a wireless router

[vkillion]

Hi. I am in need of a new wireless router. The current router I have doesn't quite perform well enough. The router I am looking for needs to have the following:

802.11b/g/n Mixed
At least 1 LAN port (for wired network)
Support 15-20 wireless connections at a time (fast and without dropping connections)
Wireless reach up 2 stories above where it is (ideally with "good" signal strength)

I've tried a couple different routers. The work well for a while, but they quickly wear out.

Any help you could provide would be much appreciated.

Thanks,

vkillion