I've posted these sorts of comments on previous threads, I think they will help you, have a look (who me? big headed?!) and apologies to anyone who's tired of seeing them
Sable brushes, such as Winsor & Newton #7 are reckoned to be some of the best available, but I've changed to W&N Sceptre Gold 11 which are a synthetic-sable mix. They are a bit more robust, and cheaper, but give very similar results; in fact I now prefer them to pure sable
I have also bought a mixed pack from www.abcbrushes.com - good quality and reasonably priced
Sable brushes, such as Winsor & Newton #7 are reckoned to be some of the best available, but I've changed to W&N Sceptre Gold 11 which are a synthetic-sable mix. They are a bit more robust, and cheaper, but give very similar results; in fact I now prefer them to pure sable
I have also bought a mixed pack from www.abcbrushes.com - good quality and reasonably priced