As for me I'm still looking for good 3d editor, often use tinkercad, but there is limitations so it is really hard to achieve some complicated results. As for me there is missing functionality to edit separately points, edges, faces, like in 123d design, but 123d design they did it not so good, as expectation for simple use. When you change one point or edge, another point or edge you can edit perpendicular to your edges, as for me editing should be perpendicular to bottom. As result I cant make geometry, which I want. And another result is frustration for me, and must do break to try again. Probably I dont know that 123d design have such functionality, but it is definitely not so obvious.