Conclusion: The Olympus DS-7000 is a solid, albeit very expensive, business-focused digital voice recorder, with a number of useful playback and security features. But you can get almost all of the same features for $100 less in the DS-3500.
Pros: Fast and responsive. Sensitive mic. Large recording capacity. Index marks on-the-fly for noting important points in a recording. Can adjust playback speed without affecting tone. Voice-activated recording. Real-time file encryption and password protection.
Cons: Very expensive. No automated transcription. Takes time to grasp features and software.