I have used Tamiya acrylics almost exclusively since switching from enamels about ten years ago. And while I would probably not recommend them to someone who brushes exclusively, I do in fact brush them regularly with relatively little difficulty. Key 'tricks' are to use retarder and or thinner, to use a brush size appropriate to the area being covered, and to resist 'working back' into areas already covered until doing a subsequent coat. With those cautions observed, it acts pretty much like any other brushed paint---smoothness is largely dependent on 'technique.'