Went with Fast Intentions and in terms of BOV sound they are pretty damn loud to me and i love it every time plus it seems to scare people when i pass them by haha. I went with FI simply because i already had a great experience in buying their exhaust system plus the quality of it was great and their customer service sold me from the start so i knew i would go back for more. What i like the most is that Tony doesn't try to sell you parts just for the sake of it, he tells you what would work best for your goals and if some parts are just a waste of money for your build he will tell you straight up. Still i think you can't go wrong with either kit!