I went with IAG and no regrets so far. Easy install and their customer service is top notch. Somehow I lost a screw and they sent replacements right away and kept in contact the entire time.
Mine does this too. I hear it when I'm driving. When I'm in the front passenger seat, I don't get the same noise from the driver side.
Drives me nuts. Took it to the dealer and of course they're of no help.