The voice dictation in Mountain Lion is much more accurate, and you don't even have to bother training it. I spent hours trying to get Dragon NaturallySpeaking trained to my voice, and it still has a horrible recognition rate. No matter which headset I use I get very poor results. However, with Mountain Lion the built-in voice dictation has a really incredible recognition rate with no training. I don't even have a headset on I'm just speaking with my head 2 or 3 feet away from my iMac. It is much more efficient for cranking out content.