WARNING TECH SPEAK BELOW!
I turn the beacon off, so mine does not broadcast the SSID. Then I set the router to only allow connections from known MAC addresses of my devices. I scanned the neighborhood and all three neighbors are on channel #6. I set mine for channel #11. Then I set the security to WPA2 Personal.
I flashed a custom "Tomato" based firmware by an excellent Polish programmer. It's far better then the well known DD-WRT replacement firmware. The firmware that comes with most home routers is utter trash and has unpatched security holes and factory back doors that are well known. My firmware has a built in TOR client as well a OpenDNS client to encrypt your DNS lookup from the DNS server and to prevent the ISP from snooping on your surfing or injection of false DNS data to send you to a false page.
Best Firmware that is compatible with many routers:
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tomato.groov.pl]