Really great for watercolors!
I own many watercolors brushes.  Till now, my favorite softer brushes are Princeton Neptunes, which are synthetic squirrel.  But these da Vinci Watercolor Casaneo Quill and Liner brushes are superb!  They not only hold water and paint, the release it very evenly, which a lot of brushes claim to do but these actually do it.<br /><br />The Quill brush is great for smooth washes - skies, water, or anything where you don't want streaks in the first wash.  It also holds a point very well, so you can paint even lines for quite a while before needing to reload.  THe Liner is nice, and while it's quite thin - it IS a liner, after all - it holds and releases paint very well so  you can line for longer.<br /><br />These are soft brushes, so be aware that you may have to use your fingers to point them after you clean them.  That's true of a most or all soft brushes, whether they're natural and synthetic.<br /><br />While this set is pricier than any of my other brushes, I must say they're worth it.  I had one other da Vinci Casaneo brush, but it wasn't a size and shape to let me experience these brushes to their full potential.  The Quill in this set is perfection - people always say their favorite brushes hold a lot of water and paint and release it evenly, but these brushes really deliver.  They're an absolute delight to paint with, and alongside a couple of my favorite synthetic sable round and flat brushes (and one vintage Kolinski) which are a bit stiffer,  I'm in watercolor heaven.