So I just got my SP3 and I have only one complaint so far. I use it mobile in the evenings but as a desktop replacement during business hours with a dock and 24" monitor running at 1920 x 1080. There is an option to choose scaling options for each monitor independently or for both at the same time - but it doesn't seem to work? I want the scaling to be small on my external monitor so items aren't huge, but larger on the surface so the touch points are bigger in tablet mode. Anyone had any success with this? Or changing the scaling automatically when it is docked / undocked?