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>>>...PG doesn't market itself as a notation/TAB program, and it's definitely not, so I'm not sure why flatfoot said what he did...>>>
1. When I need to print lead sheets quickly, BiaB is my program of choice. While it is true that BiaB does not claim to be a full featured notation program, it fulfills the limited need for lead sheets really well. I can get a song printed in under half an hour, start to finish.
2. The interface-the way BiaB accepts mouse-click entries and figures out the note values is brilliant. Way more intuitive than any other program.
When I need more detailed charts I use Noteworthy, which was recommended by someone on these fora. Very happy with it.