I played around with the download demo at work today and was really impressed on how easy it is to use, and how quickly I could move around. It seems like a great product for doing mockups and demos, or for performing initial sketches before using something stronger.
My main drivers are Cubase and Finale, but I am tired of all the tiered windows. The only thing I could not find was rich quantization functions. Audio I could not play with at work. Loved the interface. The cost is remarkably affordable.