I currently have a magnaflow street series 5x8 oval with the angle cut tip. It is not loud & doesn't drone on highway. You can hear it but not where you have to holler over it to talk to others. I also had a race series 6" round one before, still have it in garage. It wasn't super loud & didn't really give you a headache or nothing like that but was definitely louder but a deep louder not raspy louder. It will set off all car alarms like some sonic wave coming thru, very entertaining in parking garages. I laughed my ass off so many times when people would be locking their cars to walk in building & I come thru setting off their alarm or they can't quite hear on their cell phones when I was near, hilarious. I sat in this car 12 hrs during a hurricane evacuation with it & I was fine. More than 4-6 hrs at highway speed could get to a lot of people, I just loved the sound tho. A lot of times I wouldn't even listen to music, just the exhaust note going back & forth to work. Addicting, very addicting.