I haven't come across any negative reports on this ESC. However, those considering giving the D3 a try should note that 1) there is no BEC so primary and backup power for equipment will be needed, and 2) the ESC must be mounted in direct air flow to keep from burning up. I believe I read (unfortunately, can't find the reference) that without direct airflow/cooling, the unit can burn up at 50 amps. With adequate cooling, it's a 120 amp speed controller.