I think my water/windproof PI booties are fantastic but I deal with a lot of rain and not much snow. When I started riding last fall I hijacked my husbands waterproof thermal gore wear jacket for super cold and I can ride 2hr rides in 20degrees. Other than that I just try to keep my extremities warm , I have these weird gloves that look like lobster claws that I use with liners and I can shift in them. I seem to have also found lots of cold weather wear that was inexspensive and not bike specific at a local sporting goods store and even at Marshalls
I like bikes, sometimes more than my husband