My shit-weather boots are Hi Gear Snowdon. They look heavy but they're actually extremely light. (Hi Gear are basically Hi Tech copies only cheaper)
I've got two lots that are supposed to be lightweight but they still feel like stinking great clodhoppers compared to the memory foam, Skechers. I'll just have to get used to them again. I have at least got some waterproofs for the winter now. It's no fun being 5 miles from home and getting caught in a freezing downpour.