I had my first real opportunity to try my new mono QHY5 camera today on the sun, and buy is it different from my old cam. It's much higher resolution, and really sensitive... So much so that I'm having a really hard time finding the right settings to properly expose the sun, both surface and edge. Much more practice is necessary, but I can see the potential that's there, and really look forward to using it some more!
One downside is that I'm getting Newton's Rings with this cam when shooting in HA. Apparently it's solvable, but will take some experimentation. Hopefully I'll get some clear days soon.