I was very eager to try DNS on my Surface Pro 128, since I've used it for years on all of my desktops and laptops. (The fact that Siri dictation--not Siri queries--works so well on my iPhone is one of the things that made me think twice about the Surface. Ive done a *lot* of dictation via Siri; everything from notes for a book to almost all of my test messages.) I was disappointed to read some posts elsewhere (on DNS forums) suggesting that the Pro wouldn't be able to handle Dragon, but since it seemed to alll be just conjecture I bought the download of DNS 12 Home last night anyway. (I have earlier versions, but they're not supposed to play nicely with Win 8.) The good news: It works fine. Installed pretty easily, and using my Sennheiser headset mike (which seems to be about the best mike available for DNS) via USB, it gave the usual stunning recognition accuracy, as long as I dictated clearly (the "radio announcer voice" thing). I even read from some printed text to see if it could keep up with faster dictation, and it had no problem at all. Very satisfying. The bad news (at least from my POV): the built-in microphone is predictably terrible. It was able to pass the volume-setting part of DNS configuration, but it failed the signal::noise test. Playing back a recording, it was pretty easy to see why: not only is the recording volume low, but it's *very* noisy. I may have been doing something wrong, but I doubt it. Manufacturers (with the exception of Apple, and in their case probably only because it's also a cellphone) just don't seem to care about built-in microphones. Too bad. For now, I guess I'll be dictating when the Surface is functioning as my desktop, but typing when it's not.