I just bought the Tread. A lot more features than the Overlander. I see what you mean about the Tread being heaver. I set it up exactly the same as the Overlander and it is still rock solid. 1" balls work great.
I got the Archetype Racing one and it's great. I use it mostly for a GoPro. I had my phone mounted as well, but it was just too much in the way. I have a Garmin Overland as well, and it was too big for the dash IMO. I ended up getting the Archetype grab handle and a Ram Mount and that's where it...