The bottom bracket on my Van Nicholas Astraeus is a creaking when going up hills. It's already been tightened recently, yet seems to creek more and more lately - probably due to the mileage (many, many thousands of miles).
The bottom bracket is a Shimano Ultegra 6700 (SM-BB6700), I've been looking at upgrading the unit. I have an existing Shimano Ultegra crankset, would a Shimano Dura Ace 7900 Bottom Bracket be compatible with this setup? I'm also looking at Hope bottom brackets, do ceramic bottom brackets last longer? Or are they just smoother?