NB: Size of brush is everything in 3DCoat and my advice to anyone new in 3DCoat is to observe each tools behavior at various sizes - you may be pleasantly surprised at the range of effects simply by changing your brush size to the form. My very important point is do not view this behavior as erratic - that would be misleading. With practice you will begin to utilize this to your advantage as well as understand and predict how brush size changes the focus of it's effect on the clay.
As I also said earlier one of the absolute delights in 3DCoat are the smooth modes of the brushes that offer such a fantastic and sophisticated range of polishing options .By habit a more regular smoothing through needs to be adopted after some stroke modes than may be the case in ZBrush.
NB: 3DCoat also requires a different physical rhythm than ZBrush - which allows for faster jerkier moves as well as cross hatch builds where as 3DCoat prefers a direction of travel stroke to the angle of the form.
My greatest irritation with 3DCoat is therefore not brush response once set but - having to reset them each time I start - be that e-panel or spacing.
3DC literally prevents me from sketching as I can in zbrush. What happens is one/some/all of the following results: the speed of the stroke is too much for the software, the brush stutters randomly, leaving those awful circular artifacts, the results are COMPLETELY surprising because I changed the brush size and/or height slightly (and then I have to undo), or 3DC won't 'let go' of the stroke and it hangs and suddenly a huge streak of something awful appears.
I will admit LC is more manageable for me, but even then I still can't get consistent results and I lose my artistic excitement quickly.