I got Dragon Speech a few years ago as a gift. (I might even have the exe backed up someplace still lol) I know you are asking about MAC o/s, but just in case you were interested in a personal review.
I had at the time Windows 7 (tail end of 7 when everyone was upgrading to 10). It did not work as well as what I thought it would after reviewing their website and instructions. The concept is fantastic and I was excited. After a few tries, I gave up. I spent to much time trying to get it to work properly. Maybe it is better now?