I normally use Creo, which moves the model spin center to the mouse location on the model. Clicking the mouse and dragging will tumble the model up/down and left/right, i.e. you can go directly to the model orientation that you’d like in one move.
Right click and drag in Rhino either tumbles the model up/down about the screen X axis, or spins the model about the Z axis of the CPlane with a left-right mouse motion. This can be really awkward in some orientations (like when the CPlane Z and screen X are aligned, you only have 1 deg. of freedom). Seems like it’s necessary to add the shift-alt RMB to change the camera angle at that point.
Any settings or workflow tips for orienting the Perspective and 3D views? This is driving me a bit nuts, seems like tying the model spin to the CPlane is a bit limiting.