Last night with my Royal 76x1200 our Swamp skies were near perfect - clear & calm air, with excellent transparency.
With the Unihex loaded, I confirmed that with this scope, 100x per inch is useful on the Moon and Jupiter. Switching between the OR6 and OR4 is quick and easy, and that makes a difference with these comparisons. Details on crater floors and sliver-like gaps between peak shadows that I could not see at 200x were plainly visible at 300x. Jupiter did not become a bland fuzz ball. As on a few nights before, 300x revealed variations in the NEB & SEB that were not visible at 200x.
But this was an exceptional night. Most of the time, I'm limited to a 200x maximum with this scope, and find 135x most comfortable.