I bought the D9000M (potted coil version)+Deco M 275A controller and just tested them together yesterday. I paid 640USD, shipping to Canada included and strangely, I did not have to pay any customs fees. The kit came with a complete wire harness for e-motorcycle including voltage display, throttle, switches for reverse & eco mode & a wireless key fob. I had to fight a bit to get the windows software for the controller, but finally got it from the seller on a russian forum.
So far so good, the motor seems to push very hard. 15kW peak power and 9kw continuous seems definetely possible in 20S-72V config with good cooling... I think this motor is a good alternative to QS3000W. It has a temperature sensor and the stator coils are now potted, which should increase reliability and cooling compared to my old D7500 motor that is pushing and holding quite good. The windows software interface that works with the controller is based on QT and is quite nice. An android version is apparently in the work too.
UPDATE 28/01/2020:
After dismantling the motor for a check-up, I saw a major quality issue... Both end mounting flanges are not machined accurately.(There is a gap between flanges diameter and stator flange, they are also not tapered) There is a possible risk of misaligned rotor and stator... I will fix that myself, but this is very disapointing.