The Nuendo and Cubase manuals have always been some of the best I’ve seen.
Back when I was still running Sonar, they did a major version release with no user manual. None at all. Naturally, the users were less than thrilled and the company’s response was that they’d get around to it. I started looking at other options after that as it struck me as particularly unprofessional.
I’ve been in the software biz since the late 80s so I know that documentation is something that few take the time to do properly. Kudos to Steinberg for hiring professionals and doing it right.