I see both sides of the conversation here. I'm the friend who David is talking about.
The Britalman exhaust sound (for me) is absolutely perfect. It has just the amount of bass down low, and has a nice deep rip/wail at the higher RPM...I used to have a modified Corvette Z06 that was all raced out, headers, full exhaust, even full 3" exhaust at one point. That car would give me a headache sometimes, even though it was soooo fun to drive. With that said, I have never ever been annoyed by my Britalman exhaust. I guess it just depends on what you are used to and what you like.
When I drove David's car with the Tubi today, it sounded great of course, but quieter than mine and a little less exhaust personality lets say, the car doesn't speak to you as much and make as many of those different tones through the range that you can really hear and feel.
By the way David, thanks for the spin in your car.
On the flip side, when he left the parking lot and I was already inside the front of my work building, I was like Wow, that thing sounds good, and LOUD.
Mine must sound rediculous leaving my work parking lot every day...not to mention my neighbors must hate me.
Well, anyways I guess where I am going with this ramble is that everyone's perspective of loud is different.
I can see why lots of you guys like the Tubi, it is great quality and it has that refined sound that has a lot of rumble, but not TOO loud. I usually like my cars very aggressive so that is why I am in love with the Britalman sound. I admit though, if the Britalman was much louder, it might be too loud.
Hope this helps.