I have a light waterproof jacket which works like a charm. Hi-vis day and night, and very good protection against wind and rain. Costs €70. After about 1,000 km it's starting to get quite dirty, but I'm pretty sure that by washing it, it'll loose part of its impermeability. I could keep using it until it becomes truly embarrassing (I have a very high threshold in that regard). What do you people usually do?