I use Sibelius 4 Pro and am really happy with it. Features I use and like
I often scan in a music score using photoscore and then edit to a smaller number of pages just the parts I want to play. This is not as easy as it sounds, but the scanning results have been getting better over time. I do as much editing of the scan as I can in photoscore before sending to Sibelius, it seems easier to add and subtract notes and rests in photoscore. I find I still have to throughly check to confirm all the multiple note chords came across correctly, and usually find many discrepancies. Syncopated tied notes are a problem too.
Once in Sibelius I work on layout, partly to print nice hard copy but also to create a graphics image to import into my MusicPad Pro - they use very little memory space and so open very quickly!
Another feature I like is the ability to select and transpose just the chord symbols, so I can give them to my guitarist if I need to transpose down for the singers.
Couldn't bear to work without it!
Graham
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Graham, Korg Pa1000, Korg G1 Air, Countryman E6, Roland BA330, 2 x Roland CM-30, , Mackie SRM150