Hatz Biplane Association

My Glasair was a noisy plane. Like riding in a tin can before I added some upholstery. I tried the PS1200 intercom that is made for a noisy environment. It worked but I didn't like the sound at higher noise levels. I suspect it did a lot of filtering. What did work were ANR headsets with leather covers for the mic. My last radio was a Garmin GTR200 and I used the built in intercom. Worked really well. But then I didn't fly with the doors open.

Installed the Sigtronics Sport 200 since it said it was for noisy environments, but still ended up installing and always using Push-to-Intercom buttons. Just too windy and noisy for self-squelching. With ANR headsets (and instructing passengers to lean into the windscreen when talking) it works well enough for basic commands and info.

What are your suggestions and experience with Intercoms. What do you recommendations for the best intercom to enhance hearing/being heard with the noise levels of the open cockpit Hatz?