Hobbywing make ezrun as basic easy to use sensorless units but the also make Xerun which are very good and you will always see some in use at big events, I'm sure Hara uses them
I have just bought an Orca VXX as the price is reduced due to a newer model, it is very smooth but no obvious improvement over the Xerun v2.1 it replaced other than it being a lot smaller
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