I used the ground mount my first year, but since my summer camp site is in a heavily forested area, the ground mount was challenging. That next winter I installed the roof mount larger version, and have never regretted it. It was more money up front, but the only place I ever lose internet connection is when I am at the Loves or other Diesel under the metal canopy.
The in motion is a no brainer as it solves the communications problems while driving. Our cell phones are setup on that as wifi, and we enable the cellular over wifi mode on the iPhone. We are able to make and receive calls and texts anywhere at anytime. In the past we would have dead zones while traveling in Montana, Wyoming, and other remote areas.
The unit is so large that it works very well in treed areas. My DirectTV cannot find a signal, but the starlink works perfect.