I have some great Pro winter overshoes made from a thick neoprene with a PU rubbery coating to keep the rain and snow out. They work great in the winter and keep my feet as warm and dry as I can expect. I was happy enough with them that I wanted a lighter summer/autumn version for when it is wet but not too cold. I bought some Pro Aerofoil overshoes which are more of a vinyl material than rubberized. They worked at keeping water out quite well but they really irritated me. The zip on the back would contort itself around over the top of my shoe and dig into the back of my heel. So they had to go.
Now I am looking for some recommendations for some lighter overshoes that are still waterproof as it is not [yet] time to break out the tights and neoprene overs. Still double figures dudes, not time to hide the pins away just yet!