I had the TM's on my bike for awhile,it did pop on decel(kind of cool)but not shifting.It was little too loud.I then went with the quiet baffles.When i first used the QB's i thought they were too quiet but then realized it was that i was used to the TM's.The QB's sound great have a more robust rumble than the TM's and the bike seemed to repond alot smootherAnd they are not really quiet.I set off alarms all the time,too much probably but who cares.