I'm doing more and more speaking on a stage with a microphone attached to me. And I'm looking for shoe brands or any other tips on how to have quiet yet elegant and non-casual shoes.

At my TEDx talk, I took an old pair of Franco Sarto shoes to the cobbler and they replaced the plastic bottom of the heel with rubber bottoms. However, the shoe was still pretty noisy. Fortunately they had the red TEDx carpet so the sound was taken care of. I can't wear these shoes to a non-carpeted stage as they're too loud even with the rubber heel bottoms.

Any suggestions or help on quiet shoe "bottoms" much appreciated. My next talk is on the 1st.

Thank you!