MMM v3 combo or MMM v3 + Neu motor?

[SteGra]

Castle Creations offers on their website a Neu motor, specifically a 1515/1Y finned can for $265 USD. It is rated at 2200 kV. Link: 1515/1Y

Also on their website they offer a MMM v3 combo with a 2200 kV motor, which is called a "Neu Castle motor" with "up to 85% efficiency." Link:
MMM combo

Purchasing the MMM combo costs $349 and includes a Castle link USB adapter. Purchasing the MMM and the Neu motor finned costs $489 (with the Castle USB adapter) and the motor is custom made to order with 4-8 week delivery time. In a post in another forum, the Neu Castle motor is referred as a knock off Neu motor.

If converting to brushless, is the MMM + Neu motor of MMM combo, is the Neu motor worth the extra $150?