Hi, 

For the last 2 games I used the newest yiffymix models. It makes very solid pictures overall though as with most models you do have to go back to inpaint and correct the eyes.

I am also a rather big fan of the indigo furry model for more anime styled pictures. 

As for other software I am currently using photoshop to edit minor errors themselves and also to cut out the pictures including smoothing the edges. If you do not want to pay for PS I can recommend Krita. For a free photo editing tool it's really powerful.  

Most of the editing has to be done around the eyes even after inpainting and very often you get small problems like strands of hair that make no sense or double and triple tails. As long as those are in the background though it's easy to fix or edit out. 

I wouldn't mind chatting either if you need more detailed help. Although I don't think this site has a private message function. Are you on any furry sites where I could drop you my telegram? Here I could send you some example pictures you can throw into the png reader to see exactly how I generated them. 

Cheers.

Jack.