I have found these X-BLDC Brushless motors and ESC's.
These motors are made by an exclusive team, from what I have heard, in Germany, and have ESC's on I2C working at 1Khz, and 14-pole brushless motors.
Here's the link:
What do you think about this? Is curious, because I see no datasheet, they don't write anything about their products, and somehow they are selling them. (From what I have heard, these systems are custom made, and by this, their products are so expensive).
Thank you,
RobertEagle