they all have been used or are designed for use in r/c cars
you dont have to eat a shit to know you dont like it the same it true in reverse for these motors "we" are not the worlds only exponents of bl tech ... and its rare for "us " to wait for a product to be tested before using it anyway - i notice everyone holds off buing the latest cells, chassis, radio and the list goes on when they are released
what are you afraid of by restricting the list?