VIVIAN  I have used this program for a little over a year. It is a feature rich program--the clipping and annotation feature is excellent and I really like the toolbar. Like others there are features that I would really like to see included in future updates--ical integration is high on the list as is a better table features. I use this along with circus ponies notebook. I use notetaker for teaching, it is offers far superior website and slideshow possibilities than notebook. But for my research, I use notebook, it is far easier to use when you are in an archive and taking 6-8 hours worth of notes at a time. I too agree that outliner features would be improved if it were more like omnioutliner. One major drawback is the absence of a user forum. I find it an annoyance to have rely on contacting the company every time there is a problem or I have a question. That approach seems wrong for a mac product.   
(Version 2.2.3)