only use regular PayPal to provide purchase protection
The ol Tom half buff or performance half mask. It's extremely thin and breathable and can be snatched down around your neck in no time if you need to up and move. Mouth calls sound fine coming through it http://www.mackspw.com/Item--i-OLT3170Of course macks is a little high on price.
I like the simple and cheap H.S.Strut 3/4 mesh mask...I have used these for years after having the same issues with a bunch of different ones like your having.