Pro Arte Series 100 Connoisseur Brush Round

The best test for a round watercolour brush is still the simplest: dip it in water and see if it comes to a fine point. Unfortunately, one cannot do this on the internet!
The brush serves its purpose of holding a lot of paint, but doesn't lend itself to fine detail. You still need to buy a Kolinsky sable for that.

I always find these brushes ideal for my work and have a number of sizes in this range.

Since I usually have to paint very small details on dolls and figures I tried for the longest time to find proper small brushes. A lot of the small ones can barely take up the paint, the hair is too long and thus quickly bends when you apply too much pressure on the brush and can't be controlled well.
One day I ordered some art supllies and added these to my cart, hoping I would finally find a good tiny brush, and I wasn't disappointed!
The ones I use are the size 0 and 00, they easily soak up the paint and the length of the hair is just perfect to work with, the shape of the top makes it possible to even paint smallest details without a problem and the "broad" base helps a lot to keep up the shape (you can see on the picture that the base is pretty wide and narrows down to a small tip at the point evenly).

I also have to admit that I sometimes forget to clean them and they get cleaned days after I have used them the last time. However, I used my last two for nearly three years for most of my works and even forgetting to clean them didn't bother them much and they kept their good shape.
The only reason I replaced my old ones was because my cat stole them and I can't find them anymore ;)