I have charged me the demo version and tested 2 weeks. My impression: very good program for burning. UI is a bit Gewohnungssache but the main thing it is stable and no crashes. I recommend 2GB RAM (Vista), so that the program also runs stably without crashing or errors because the program period a lot of RAM and the RAM fully formed overlays that then lead to crashes and errors.
Conclusion: Very good program, if one has the appropriate hardware !!