Ya weird. My noise is coming from cog area, too. I've currently got an RD w/the 107 BB and durace on one of my old conversion schwinn bikes. Yet the cheaper Bulletproof crankset is completly quiet on my old miyata. I don't want a cheap Bulletproof on this IRO I've got enough dough to get a different crankset. thats why i'm open to hearing what people were happy with. Its is sooo nice when it's quiet and dialed in. Thats what I want and i'm not married to sugino - perhaps another crankset is what i need if i want perfection.