This winter I really had to decide what to do regarding my winter bikes, with regards to rear brakes. If there's water (from rain or melting snow/ice) I get a whole lot of crap onto the rear rim. The problem is, I have to ride through dirt/gravel on my commutes. And the fine dirt covers the rim, and then the dirt and water gets under the brake (a little is enough) and presto, my rear rim is covered with dark grey (almost) black mass composed of sad dirt, water and tiny aluminium shavings. And that's when the stopping power starts to get bad.
Solution: thoroughly clean the rim after EVERY ride.
Consequence: me being royally pissed off after a while. F*ck this ****, I had enough!!
So I put a wheel with a Shimano Nexave hub (not a gear hub, just normal cassette freehub) which can be fitted with a Nexave rollerbrake. And a small Nexave rollerbrake (has a very small cooling disc, just to try it). This is the cheapest rollerbrake you can get - not sure if Shimano even makes them anymore, all the ones you can buy nowadays have much larger discs.
Anyway, the thing simply rocks. NO MORE cleaning the rim, no more cleaning the brakepads (oh yeah, before anyone asks: Koolstop salmon), no more buying new pads, no more rim wear, no more weakening of stopping power. And no more dirty black grime on the rim.
I'm replacing the second winter bike's wheel today.