I run the Mamba Max 5700kv setup and love it. Very smooth, strong brakes and totally consistent. I think I'd class this setup as 'mild motor geared to give performance'. I keep flirting with the idea of one of the hotter versions, but apart from being a handful on the track (and let's face it, It's never been a lack of horsepower that's let me down, just lack of talent
) the hotter motors will take a far greater toll on transmission. These latest BL systems are capable of putting LOTS of grunt through those poor old belts and gears..
The nice thing about BL is you just plug it in and go. No skimming, no brushes, no nonsense! Leaves time to concentrate on all other aspects of car setup etc. Great for us club racers.