I got some questions about this, and there’s no point in me posting any brush-sets since I basically only use three. I remember when I was new to Photoshop, and I found it really hard to find any good info on how to make my brushes less blurry, so here it is. All of these require a tablet with pen pressure enabled for good results.
The first one is my sketching/lineart brush, which gives a really nice crisp line. I also use this for laying down my flat colors and when I’m doing solid shadows. Since it produces a very thin tip, it’s great for defining hair/fur without much problem.
The second is my main blending brush, which I usually combine with a lower opacity, from 35%-80%, depending on what I’m doing. The “transfer”-option gives a nice texture without being overwhelming.
The third is basically just the same as the blending brush, just with softer edges for, you know, when you need that.