i also have these big Galfers and it's fine. i think they are slightly quieter in general, but it does depend somewhat on the moisture and dirt spray, speed, etc. sometimes at slower speed the first bite can still produce noise and vibration during wet rides. one thing to keep in mind is that huge rotors like this take longer to heat up before they have big power. slow speed riding in the wet (which is where i live, with no spring in sight yet, but that's another very grumpy story....) has no real advantage. but when i get a sustained descent where speeds increase and i'm on the brakes more, they are awesome. i'm also a larger rider at about 230 pounds fully outfitted to ride with pack. this bike excels at this kind of riding with it's suspension horsepower, geo and big brakes. love it.