I started with Star Tools because, obviously it's the easiest. I have never been sorry for that choice.
Now I work daily on learning PixInsight, because I feel it ultimately provides more tools and more control. But the learning curve makes Mt. Everest look amateur.
I start every image with total PI, because my skills need development. I am always trying to learn or remember how to best use its many, many processes and scripts.
When I finish, the next day I reprocess using APP to stack and Star Tools 7, to see if this time, my PI skills have FINIALLY surpassed what ST can offer.
Well, the short answer is no. ST still consistently gives a smoother and more polished result than I can so far achieve in PI after a year of effort.
Yes, I give Ivo much credit, he is a very smart guy.
I will continue to use both, and I am very happy to have both! I wish I was better at both.
I hope that eventually my PI skill levels will get me to be a better overall processor.
Now, to escape from Bortle 7.