I used the PREVIOUS version of the best VR for MAC, which was called MACSPEECH which was pretty darn good.

At macworld this year, Macspeech introduced a NEW version of Macspeech called Macspeech Dictate. This product NOW uses the nuance/dragon VR engine, and apparently GREATLY improves accuracy. I haven't bought the upgrade yet (I should have, it was only 79$ at the time) but my FATHER bought it and said it really improved his use of the product. And, he thought it was pretty good to begin with.

I haven't been out there yet to try it, but I'll try in next month when I am on the east coast. Reviews show it to be quite good.

There is no longer a DRAGON/NUANCE product for MAC sold by Nuance.