My GF Hifi 29er made all sorts of noise with the stock J5 brakes. I tried switching to avid organic pads and the noise is much better but the brakes lost a bit of power in the process. Now I need either both fingers to brake in the same sections or just pull harder with one (to the point that my finger is sore after riding).

So... I have been considering K24's. Very seldom have I seen any posts that complain about noise with this brakes and most everyone is happy with the power. Has any one tried K24's on a Hifi 29er? Have you had a bike that squealed with avids and then was OK with the formulas?

I just don't want to drop a bunch of cash on something that does not solve the noise problem.