For the first time in a year or so I tried dictation. The difference is, instead of using my iPhone 7, I used the 2018 iPadPro. Boy, I was blown away. It is great. Almost as quick as I talked, and a really great accuracy rate - about one error per paragraph. The other surprise - to me at least - is that it works just as well with no Wi-Fi or mobile signal.
For me, this is a game-changer. Dictation is now a way to speed up work - no longer a novelty or proof of concept. It works, reliably and quickly. A good reason to justify splashing out on those super fast processors in the iPad Pro.