Hi,
Undoubtedly these of sable hair are the best.Generally all brushes with the authentic hair, no nylon these are for pupils for their drawing lessons.I think that you should buy some of different size. I use no.4 (flat) for bigger surfaces, no.1 for bigger details, no.0 standard and also falt one for smaller details, no.00 and no.000 for accurate operations.It would be nice if you could buy no.0 with quite long and thin hair.Also in one of no.000 you should remove hair partially in the way to leave three hairs, it is nice brush for very very accurate works.