I've got the mach 1s and I think they're fantastic. I used them on Seminoles and Archers and they worked just as well as anything else I've used in terms of sound quality. They were the only thing I used in the 1900 and for a short time that was great though obviously not good in a turboprop in the long run as you don't want to go deaf when you're 48. Since I never used anything else in the 1900 I have nothing to compare it to. I'll find out in a little bit here how they work in the E-145. I'll be disappointed if they're too noisy.

And I always use either the blue foam or the white rubber things. Someday I'll get around to the custom molds. Most people say it takes some getting used to to feel comfortable in them.