I had this same dillema last year.

Used to use rain pants and jackets. Breathable promises were all empty promises. All I really wanted was something that vents.

I found it when my father in law's friend sent me the Carradice rain cape. Oh it's PCV and doesn't breathe, but it's a cape! Air goes under: constant air flow. In cold times I still use the over booties. In not so cold times I use sandals and shorts, so don't care.