I actually prefer chromoly flywheels. Maybe its just the strength of it that really appeals to me. My car is boosted and I run it pretty hard, so with lots of torque and heat, aluminum will eventually warp. With a quality made chromoly fw you shouldnt have to worry about the starter chewing up the teeth on it. I think only jun and spoon had this problem. Some good chromoly fw's are comptechs, todas, and exedys.