I have recently started using PaintShop Pro, but in the past, I liked to set the slders according to the photo. It would always remember my last one as default but I found each photo seemed to demand its own settings
You can access many presets from this page:
Sometimes they provide a good start, but it's always better to do it manually because structures, moods and colors of images are always different.
Alan, one thing you can do is save a preset each of your settings and name them to use later
Many thanks for your comments.