Router recommendation for SB 6180

I hope it's OK to post this here since I think it's technical.

I have an old Linksys 54G router and I want to upgrade. I know that everybody has an opinion but I really need some.

Here's what I need. A solid N router that's has decent security and an easy to navigate interface. The other must is I want at least one USB port on it so I can connect a printer. We usually have one laptop connected, two at the most and like 5 phones that use wifi.