IMHO, the performance of a brake should not be determined by the (lack of) friction between brake linings and drums but by the friction between road and tire. In other words, brakes can hardly perform too good. (but can be too aggressive). So I changed the original brake of my recently acquired Rapide by the Vincent Speet 4 LS.
Looks good and works amazingly good !
Small detail: I used the original balance beam brake adjusters for the look but didn't want to drill them out, so I made two small bushes and cut the outher cable.
Thanks Vincent Speet !