Just let me point out, Oliver, that we are NOT just talking about "Chinese alternatives" here ... And by "Chinese alternatives" I presume you mean the Turnigy SK3 motors available from HobbyKing, which we can see are the exact same motor (internally) as Hacker and Extreme Flight Torque motors.
However, Hacker and Extreme Flight Torque motors are ALSO completely identical with:
Z-series Hyperion -Aircraft World, Japan
Shulman Aviation FURY -USA
Boost motors -from Pichler, Germany
Gens Ace -Germany
Common-Sense-RC -USA
Sonic Electric -USA
LiPolice -Schweighofer, Austria
Pelikan Foxy -RCM Pelikan, Czechoslovakia
Apache -AnyRC.com, Korea; & SlowFlyer, Switzerland
Pilotage Nova-Line -Russia / Ukraine
BMI Models "Spitz" motors -Germany
Precision Aerobatics Thrust motors -Australia & USA
Lipotech -Italy
JP E-Pro motors -UK

-because these are ALSO just a small selection of the motor brands made by the SunRay Tech factory.

So it is not really "Chinese alternatives" that we are talking about here. We are more talking about all the many motor bands that are produced by the SunRay Technology factory, and then sold on by the various re-sellers.