I use Garmin Basecamp on Surface Pro 3 for planning cycling tours. It works, but unfortunately it doesn't look too good. I.e. text looks well in the navigation and control elements, but seems blurry inside the map. The map itself looks worse than on a Dell Notebook with Full HD resolution. Unfortunately, it even doesn't look well on an external monitor (1920x1200), while using the same monitor with the Dell notebook, the maps look excellent. (I use the external monitor as primary display without screen extension).
Using the touchpad on the type cover does not feel too comfortable for navigating inside the map, neither does the touchscreen. Moving or zooming the map works well, but not exact positioning of routes, waypoints. To use the program efficiently, I have to take a mouse.
On the positive side: even the graphical control elements display large enough for touch screen operation. For my usage, processor/graphics speed of the i5 SP3 is more than sufficient. However, I never use the 3D display of Basecamp, so I cannot judge, how that works.