I got maybe 1000 miles out of a FSA Platinum Pro ti spindle bb before complete siezure. Mostly dry climate riding, all offroad. Which I guess isn't too bad for isis drive. I replaced it with a Race Face Evolve chromoly bb and for the life of me I can't get the creaking to disappear. The FSA seems to be a bit higher in quality but I'd go with a chromoly spindle if you're hefty. Too much flex with the ti which presumably beats on the little bearings that are the isis drive bane. my 2 cents.