Yes, capes get my vote too.
I tried a posh new hi vis "showerproof" cycling top a few months back in a heavy shower, and got bl**dy soaked.
I switched back to my trusty 25 year old fully waterproof cape, and now stay nice and dry again.
So many pluses, no sweating, covers the handlebars too, so the lcd controller and twistgrip are sheltered, and keeps my legs dry as well, without needing leggings.
I remember using one as a paperboy 50 years ago, cheap, low tech, but worked perfectly, year in year out, on hundreds of rainy days.