I've used StoreLaw, Juristudents, and Word. I prefer Juristudents over StoreLaw and Word over both of them.
I liked the old StoreLaw "Student Edition," but then they revamped it, and I found it too complicated (too much switching back and forth between screens). I really liked Juristudents because I could see my brief at the same time I was taking notes, and I would recommend it to a 1L who is looking for something that's not Word. Both of those programs are very case-oriented. Once I got past my first year and stopped briefing (okay, I still book brief), I found that MS Word was the best option because by that time I knew how to take what I needed from the cases and condense it into outline form.