Originally Posted by
Desolas
If your going to be using this as a race motor I would find who's the fastest guy and just buy the same motor, it will save you the hassle in the end. Ultimately they are almost all the same motor coming off the same manufacturing lines. Novak has the best reputation for customer service among the companies you mention, so when it blows up it will be easier to replace.
Novak builds all of the N brushless motors here in Irvine, California.
Bonded rotors tend to explode and then you cat throw away full motor, because these small magnets inside motor are impossibe clean out from motor.
Novak's non-warranty service policy replaces even the most damaged Novak BL motor for less than half the original price.