Highway drone with 2.5L 2014 Mazda3 axle-back exhaust?

I've got the CorkSport axle-back exhaust on my wish list for my 2.5L 2014 Mazda3, but I'm wondering how much highway drone results from its installation? I've had many exhaust systems on my cars. Some have had very little drone at highway speeds and others were pretty obnoxious. Since I have my RX-8 to be my toy for more aggressive modification, I would like to keep my 3 more civil. I can stand a bit of an increase in loudness on the expressway, but not an annoying drone. I've watched the video for the exhaust on your site, and it sounds perfect in the clips you have, but you don't have one from inside the car at say, 70 mph. Thoughts?

We do not have any video clips of the interior sound. The exhaust is pretty mellow on the sound note. I will see if we can get something from our shipping clerks car which is a 2014 Hatch with a 2.5.

Derrick