I have Koolstop dual compound (black/salmon) on two bikes, a modern Roubaix, and a vintage Raleigh. I did a 50 mile Solvang ride last year in pouring rain on the Roubaix, and the dual compound worked great. I also found them very quiet on both bikes. I bought a vintage Peugeot which had black Koolstops already mounted on Mafac Racer centerpulls. I find them less effective, but my Roubaix has fairly new rims, and the Peugeot brakes are probably a few years old, and have gotten harder. Thumbs up for the dual compound, never heard of triple compound.