I personally like BB30. *IF* the bottom bracket area has been reinforced properly, it does provide an increase in BB stiffness with the BB30 set-up. Better Q-factor, no BB cups or external bearings, cleaner looking and saves you 100 grams or so depending on whos BB30 crankset you use. You can also use standard non BB30 cranksets with adaptors (they are cheap) although that defeats alot of the purpose.