industry nine...they sound insane...and the strongest rim is probably a Mavic 823
I9's aren't near as loud as most people think. I have a set. The sound is more like a quiet weed-wacker. It's like a constant drone. CK's aren't that loud either. Loudest hub's I've heard is a friends Hope Pro II, and My boss's Ringle Abbah, they both are pretty loud. Some BMX hubs are pretty loud too. I My freecoaster is like chainsaw!