Found something new, thought I would share.
Detecting WiFi Channels in Mac for best performance.
Mac OS X comes with a useful tool that allows you to find out which channel is least congested and most optimum for your router. However, the tool is hidden and not easily accessible.
1. Press the “Option” button and click the “Wifi” icon at the system tray. In the dropdown, you should see an option “Open Wireless Diagnostic”.
2. In the “Wireless Diagnostic” window, move your cursor to the menu bar and select “Windows -> Utilities”. Go to the “Wifi Scan” tab and click “Scan Now”.
3. Once it has finished scanning, you will be able to see which are the best channels for your router and WiFi network.