I am seemingly the only person I ride with to mash up a Chris King though I do put this down to possibly running it single speed under tension putting extra pressure into the drive side bearings…I’ll put new bearings in it and run it on another bike but worth the money? No chance.
XTR last me around a year, funnily enough exactly the same amount of lifespan I got from the bottom of the range Deore one.
So I reckon if I’m replacing a BB every year be it Deore or XTR i’m going with the one which costs me a tenner!
–Didn’t know about rose bikes will have to look at them, in future.