I wouldnt get either one. The ATI is a great piece, but theres no need to spend all the extra money for your aplication. If you were building an all out race car, id get the ATI.
Id go with either the powerbond or romac unit. Both ar well proven balancers and you won't have to worry about getting a new one anytime soon.
has anyone thought of/heard of switching to a 28 oz harmonic balancer and 28 oz flywheel....just wondering....wouldnt that help the motor to rev faster and make more power?