I agree w/Hooper The louder the better. Mantis is one of the best coasters (yes, including raptor, but anything by B&M is sacred to me.) I love the fact that I have to yell when a (Mantis train) goes by! I am not in the Q. to observe art, I am there to ride the best, loudest, most thrilling coaster in the known world! The louder the better!