I have a Force Crank, on one of my rides, and find it stiff , durable and reliable. 2k miles no creaks or problems. One of the Board sponsors offers a ceramic bearing upgrade, but haven't found the need to do so yet. Is there a big difference between force and rival? I know the force comes in at 660 gms. including BB, and FSA forcelight comes in at 630 gms , record at 643. Just a guess, but the difference wouldn't win a race