Hi Matt,
Those images are looking good.
I have also discovered how viewing in negative can help you see different details. When People come over to my obs for a look see at the sun, I usually setup a Live View on a TV using the GStar-ex mono video camera. This camera has some wonderfull software control that lets you control all the settings on the fly from the PC such as exposure, negative, and clipping. So you can really make some features stand out or occlude the disk on the fly and focus on the prominences etc.
And Hello Dave,
Yes I agree, AVI Stack is my program of choice for stacking images too. Besides it looks cool when it is stacking
Regards
Bill D