I've used Print Music and it's difficult to use sometimes. I have been using TabLedit for a few years and I love it. It isn't very expensive ~$40. My teacher has introduced me to Musescore. I haven't had time to play with it yet, but it seems to be easy to work with.
Hi Kay - I should probably clarify when I said "I like PrintMusic". I've never tried any of the other suggestions, so it's all I know. Yes, it can be difficult, but like anything else, the more it's used the more comfortable it gets, at least for me. I need to try TabLedit and Musescore at some point.