There are 2 distinct camps on brushless technology. Sensored and sensorless... which is a bit misleading since in our opinion the durable and solid windings make a better sensor then a potentially fragile hall effect sensor....
Either way the broader world is sensorless which offers compatibility with any motor.... There are not that many sensored motors to choose from. Both technologies are capable of making a good system, but the sensored controllers are obviously a little more restricted... I think we are going to have plenty of choices for everyone.
Tekin Prez