Encore has been great for me, I've used it for all kinds of guitar arrangements -- classical, jazz chord/melody, folk songs w/standard notation and tab, etc. It's insanely easier to use than Finale -- supposedly Finale is "more powerful", but I found the Finale user interface completely exasperating. Generating a tab staff from standard notation takes a few mouse clicks, you can define any tuning for the tab, and it has a good set of guitar fingering and articulation symbols.
Dunno what the status of Encore is these, Passport went under a couple of years ago and the product line was bought by those marketing geniuses behind the G-vox, which can't be good.
(no, it doesn't do sheet music to midi -- it does great midi to sheet music, though)