I bought an Inkston 0100Wl 小鶴颈 XiaoHeJing “Small Crane Neck” 羊毫 Yang Hao Wool brush some time ago and use it for Li style calligraphy. It is excellent and works really well especially with the “silkworm head and goose tail” type of strokes.
The brush is listed as a medium size. Is there another brush you could recommend that is larger but with same characteristics?