People often ask me about what size brushes to get for a class...and I have to admit it's wildly relative, if you're talking round brushes! I just suggest getting the biggest you can comfortably work with, for the large size...you can move a lot more paint without having to reload, and it will help avoid niggly work and hard edges where you don't want them.
Manmade brushes are very much improved...I haven't had a sable in YEARS. The best of them hold lots of water and a good point...and no worries about breaking the bank or losing your brush!
|This shows the largest waterbrush, on the right...and as you can see, it's not very large. That's a #6 next to it.|
|But look...here are a couple of #6 brushes! One's Loew-Cornell stain brush an the one below is a Princeton. Hmmmm...|
|And here are two #8 brushes...with a #6, all of the SAME BRAND...|
I really like Loew-Cornell brushes, by the way...their Ultra type is wonderful!
|And here's a Grumbacher #12 with a Loew-Cornell #8. Doesn't appear to be a lot of logic here, does there...|
Happily, most flat brushes are sold by width. You can get a 1/2", a 3/4", a 1" or larger and you know pretty much what size it's going to be...it may be longer or shorter, it may have a better edge, but at least you know it's probably going to be a 3/4" if it says so!