had similar issue a while ago, i replaced mine with set of campag super record ceramic ones. purely for the increased longevity .
fitting was a utter pain though as you do need specific tools to do the job with campy and even with them it isn't a easy job but more a "experience" compared to the utter simplicity of hollowtech jobs
I've been looking into this as GXP BB's are absolutely terrible and my second one is already creaking. I think a Chris King BB would be the ultimate, not cheap though.
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fitting was a utter pain though as you do need specific tools to do the job with campy and even with them it isn't a easy job but more a "experience" compared to the utter simplicity of hollowtech jobs
http://www.justgiving.com/broxbourne-runners