I did use Dragon Naturally Speaking-the Professional Version-for Doctor's etc. I was a sort of "tester" as the person who trained me worked in Intellectual Disability (I used to as well) and wanted to see if it would be suitable for Service Users.

I spent a lot of time training it to recognise my voice/words/commands etc but I found eventually that the problem was me! After a while eg 15/20 mins surfing the net my voice would get "tired" and the program wouldn't recognise words/commands etc. So, what to do? Train it to recognise my "tired" voice? I gave up using it because it got too frustrating to use.

Otherwise, I would recommend it-if unlike me you don't have the voice problem. You do need to get the best mike you can afford as the one that comes with it is not great. Just keep in mind the amount of time needed to train it and that you have a good knowledge of your operating system. Also, from recollection the one I had would just work on certain browser/s.