Hey zacster, if you don't mind, I'd be interested to see your results regarding the FM signal in your area by doing this test. On the http://fmfool.com
website under 'Tools', choose 'FM Signal Locator', enter your address, city, state, zip, and then click 'Find Local Channels' to see the results. The strongest signals are listed first, and check the Rx(dBm) signal column for the numbers. My strongest signal is -8.1dBm, and the station referenced is consistent with the RFI I get with my Mani. It would be interesting to see what results you get.
Thanks for considering.