In the last year I downsized (apparently they now say rightsized) from a 12" LX200 to a Skywatcher 120ED on an EQ6 goto mount.
This is on a steel pier in a Skyshed Pod dome.
Camera is a Hutech modded EOS350D.
Guide camera is Starlight Express lodestar
"Guidescope" is 300mm f4 telephoto. I also use this for imaging.