Not to be off topic (if indeed i am), but i came back to report that my N360 no longer clicks as it once did, and is nearly silent. I am guessing this is due to the thing finally wearing in after a few months of use.

As for reflecting off of nearby surfaces, it's amazing how loud some drive systems are when the crank is not moving, and you really only realize when you ride near a tall curb etc.

My old nexus 4 speed did clunk when shifting, however it was also in heavy duty everyday use for 9 years. Newer geared hub bikes I've ridden seem to shift very quietly (no noise from hub), but i am sure it's different between different hub manufacturers

- Andy