I have an Versaport 3 (the original w/ the lever instead of the knob to flip the mirror) w/ the removable pick-off mirror. Ability to move the pick-off mirror in/out of the optical path as well as having access to both sides of the frame to find a guide star- very flexible. Made rock solid and worthy to carry large payloads. $200.00
I also have a MGF2 micro gauge focuser for 10-16" SCT (any SCT with a 3.25"-16 male threaded visual back). Very, very fine focus control, rock solid, work of art. $300.00
Both have maybe 12 hrs. of cummulative time used. Rick Darden.