I hate to admit it, but I've switched to Sibelius for score editing. I've done about a dozen projects ranging from piano to full orchestral score and it was, *gasp*, enjoyable to do. There is an art to printing scores and Sibelius makes it easy. (You know, mostly.)
I do all my composing in Logic Pro then do a MIDI export. Crude? Yeah, but I love everything else about Logic Pro and I've really found a good editing flow. I still have the Score Editor open, but now it's just a quick reference to the music.