One word: impressive! We had a sizable, 12 hour audio book that the likes of Final Cut Studio 2, QuictimePro, Audacity, et al just couldn't cope with. We discovered Fission and it breezed through the edits and exports with ease. The integrated ID3 tagging just added the icing when creating podcasts and audio books. Seriously powerful piece of kit and highly recommended, certainly for it's price point.