Do they hinder sound quality? Currently looking at The Audéo PFE and wondering if I should get it with the mic or not. It would be a plus, but I can live without. PS: Can anyone recommend a dealer? Amazon seems to be a bunch of marketplace people, and eBay has stuff for hearing aids. Edit: Nevermind, found out on Amazon that the marketplace dealer was Audéo themselves, but now I am wondering if there is a cheaper alternative?