Thanks Steve. Yeah, I reckon now's a good time to be getting into solar observing/imaging.
Here's a few more high magnification images - these all have a 2x barlow in the train. I'm still experimenting with process settings and wavelets to extract the data with minimal artifacts at this scale.
Yes, I am happy with the full disc shots. The higher res ones I think I'm pushing the SM40 too far, but I'm not giving up yet just in case there's something I can learn in the processing. I think I'm getting better but I suspect that in the end I really just need a bigger Ha filter!