I have Dragon Dictate, Naturally Speaking. In my experience, I have found that if you type faster then 70ish WPM, then you can type faster then you you can redictate accurately.
If you are a slower typist, or just need to give the fingers and wrists a break, then this can be a good option for you.
You also have to consider the time it takes to voice train the software to recognize your voice the majority of the time correctly as well as training common medical words. Even if you buy the full medical version, there is still an option to have the software "read" files on your computer that you select and it will compile a list of unknown words in those files that you can then train.
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Paula
pjTranscription@home.com