I ordered this brush online, so I had no way of seeing how big it was going to be. If you paint big, then this brush being bigger would be a bonus, especially for big skies, and is good value. On the other hand, I was really after a smaller , all rounder size. The size 6 would have suited me better.
My main criticism is that the sizes are misleading. The size 10 is more like a size 20 . So since it's a too big, I have not used it enough. A friend of mine has a size 6 brush and just loves it.