Thanks, Dawg. I have been imaging more DSO targets (nebulae and galaxies) after these. But some of them were not satisfying. So I have been studying and learning the lengthy DSO post-processing workflow and each critical and tricky step on the way... but just not there yet. Can't imagine this is...
I use z8 for wildlife photos and z6ii for everything else, including sports during the day. Depending on the site and other conditions, I use either z8 or z6ii for nightscape photos. GL for upgrading.