Milk frogs are a beginner level tree frog. Clown Tree frogs are not. I have never kept them to be honest. All the people I have talked to have had ZERO success with them. Which is why I havnt tried to work with them at this time. My next species I am going to be breeding is mossy tree frogs and pacmans. =). So this actually is NOT a hard decision. MILK FROGS by far. =)