I thought i had my mind made up on the borla exhaust, but I have recently read that there is a lot of drone inside the car at certain rpm's. Is this true? I was just wondering what the sound difference is going to be between the 2 exhaust systems, as I am going to be going with a HF catted H pipe as well. Thanks alot. Maybe some pro's and con's of each exhaust if you have heard or have had any experience with the 2.