I have been using Fission since v1.0 and continue to be impressed with it. My needs are relatively simple: I record and edit 2-hour talks for others in the classes we all attend. Fission does almost all I need and does it beautifully, its only lack being an inability to mark different areas of a talk to (briefly) remind myself of what was said at what point in time. This is, understandably, never going to be a high priority for the developers as it's such a specialised need, but the other day when I upgraded to v1.6.5 and found that the Fade Out command now crashed the app, Rogue Amoeba fixed the problem within 3 days of my reporting it and wrote to let me know. Kudos and thanks to them!