I'm not the best person to offer advice but maybe I can help with what I had to go through: I found a lot of success with just changing the wifi 'channel'. If you're on an android device, there is a wifi app that will scan what wifi channels are being used in the vicinity. Do a quick scan and switch to a channel that isn't in use.
Unfortunately I couldn't find an apple app that is equivalent.
Oh yeah, and I had some luck with moving the router to a more central spot - turns out I was competing with my neighbor's signal.
This thread was great in helping me:
http://forum.calgarypuck.com/showthr...hlight=netgear
Although the router listed in the thread is gone, this looks like a great deal at $50
http://www.memoryexpress.com/Products/MX47705