I read through the first 5-7 books and stop every time. It feels like the dragon ball z effect. We make him too strong and the bad guys become galaxy level threats to compete. So they have to find a way to make a new threat stronger or unique enough to matter. I always get lost at the same book and stop. The books draw you in and one of the books is hard to read (between books 3 or 4 I think) but the last 1/4 of the book is amazing. I would read until you can’t push on anymore. It’s well written in my opinion.