Dragon 12 is very accurate if one is careful about microphone, mic placement, clear enunciation,etc., and it doesn't take it very long to learn one's own medical vocabulary -- if you put in the time required to enter the medical words. There are those environments where the docs won't be bothered to "teach" DNS -- they should obviously buy the medical version.
What I have seen of "voice recognition" notes from big hospitals and groups in Portland that are using DNS Medical suggest to me that no matter how much money your Exec. committee is willing to spend, the results will suck if the doctors won't become their own transcriptionists. Someone has to proof read that garbage it puts out.
In my solo office situation, I do the simple notes by typing and template, but there are some notes and letters that actually require reflection and thought and can't be whumped up in the exam room or between patients.
I also don't like spending time at the office when I can be home -- that is one of the benefits of EMR.
From home I use RDP to access office computer, DNS 12 on home machine. It will automatically bring up the "dictation box" when you start talking into the "remote" window -- DNS only knows it is remote, doesn't know it is AC. At the end of the transcription, say "click transfer" and it automatically is pasted to the AC window. There is a second or two delay in opening the dicatation box, but it is hardly laborious -- and most of the time, your dictation is in the buffer and is being processed even before dictation box opens, so there is no delay at all.
Used like that, there would be no advantage to me to the Medical version, in fact, I suspect the speech engine might just be a little better in DNS 12 than in Medical 11. If I actually spent my time at the office, I would probably spring for Med11 -- but of course, you can do the same workaround in the office. Use DNS12 on one machine and remote to another over the office network that is actually running AC.