I bought this version for Mac when I was an old PC version for several years. Recognition quality has improved remarkably to become impressive. One can actually dictate with extremely low risk of error, making it finally usable software at a scale other than a gadget. The error rate: there may be ten or twenty consecutive lines without any errors, and suddenly meet a group of misunderstood words, if the phonetic permitting. It may well write 'Amazon' if you pronounce quickly and elsewhere "in my zone" if you cut too slowly syllables. Overall, the quality is excellent. There are some agreements mistakes, but hardly more than that generated by the grammar checker in Word, especially with multiple subjects, often seen as a singular. Ex: "Dupont and Durant eat [s] together '. The agreement faults are more common if a moment it stops in the middle of a sentence to reflect on the result because the software considers that the recovery is independent of the above and therefore more research agreements. In continuous dictation, the problem is less frequent. It is still necessary to read the text ... I personally do not use it for voice commands system but only for text dictation. A worthwhile purchase if you often have to type long texts. Significant time savings.