I got a Quantum 4530-500 brand new in a box on my shelf, I got this motor from Greg Alderman, The Story is when they first came out they were the Bomb!! however with the growing popularity of this motor, especially with the Goblin, the motors went into MASS PRODUCTION, with that being said, Many test were run on these motors and even a few of the Team Synergy Pilots were sponsored by Quantum, however with the gain in popularity came Inaccurate KV's. Meaning just because you bought a 4530-500KV motor didn't mean that is what it actually ran.. Personally, for me I'm not that anal about it but some of the guys this became a deal breaker. My motor sits on the shelf now since A few of us Team Guys had the opportunity an picked up the Scorpion as a Sponsor. Not saying Quantum is a bad motor by any-means but just a tid bit of info..
And Matt did run the Quantum during the Video however the Scorpion Deal came right after, Plus he did alot of R&D with Scorpion on prototype motors, which allowed him to offer Team Synergy Pilots the 2 year contract.
BR,
Kevin