I also like the Astra blades. Even more important ive found is a quality razor holder. I had a few, but when I got a Henson for Christmas it was the best shave I’ve ever had. Their marketing isn’t a gimmick. A well supported blade held rigid doesn’t flex and pull at hairs.
I have the standard AL13. I didn’t know they had different levels. My beard isn’t super thick, but not sparse either. I can shave a full weeks growth (4-6mm length) without issue. My previous razors would clog a fair bit if I did the same and I’d have to take less per stroke and rinse more frequently.