A while back I sold my Duke 1 ( a great little brush) and bought a Duke because I wanted something a bit bigger. I've been thinking of going bigger still and was looking at a Duke 3. But I know Chubbys get a lot of love. In comparing them I notice their knot sizes are almost identical. So if there's anyone out there that has used both, either both in Best or both in Super, can you tell me how they differ, which you preferred, and why?