I was interested in the colan I also. I wanted to use it for murals and signs. The only other brush I thought about was the iwata RG 3 for comparison. The cola I does have many more options like a wide selection of head sizes like .2mm, .4mm, .6mm, .8mm, 1.0mm, and 1.2mm . Plus a large selection of different sized paint cups that are gravity as well as a siphon attachment for bottles. The back handle piece is adjustable and the finger trigger is for left and right hand use. I am still considering buying one, I would give it more of a look .