I run 13.5 brushless. I have a Speed Passion V3 which is a relatively unfashionable motor in touring but has been good enough for me to TQ plenty of club meetings over the past couple of years, and I've done OK at the CWIC and the BTCC.
One of the most popular ones locally seems to be LRP/Nosram X12. Also the HPI Flux Pro. and Hobbywing.
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