When i had anodized side walls the braking was super cool! I was running magura blacks, the braking was utter sweet! But as one of my pads was rubbing the anodized colouring started to come off, so i just ground over the rim :-. One problem with those rims, is that theyre way to wide for the front in my opinion. I originally tried a new pair of magura black pads, but they wouldnt fit :ermm:, it was just lucky i had a pair i was already using which had less pad on them.
Obviously though, for koxx frames etc, they must be brillient as they are wide at the rear, etc? :S so wide rims are needed :-.