Had to cop a hop on one of the old Caribous (C-7?) a few times. Actually not as noisy, mostly I was just glad to get wherever and paid no attention to the noise.
The most fun, and noise, I had was in the Hueys from the Air Rescue Recovery Squadrons. We got to ride them quite a bit as they needed to know how to get to the missiles complexes so they flew crews every day except for bad weather.