I too have used unrealBook for a bunch of years ... I like the way it works and it has plenty of
features for many things .. MIDI (which I use for Registration recall), set lists, searches,
metadata (database/keywords), lots of useful features . . .
I use it for wireless features too ... both for my page-turning pedal, wireless MIDI to my Genos
(via mi.1connect midi device), and WiFi for networking several iPads (for several musicians), all
who are using unrealBook. When I change to a different song (PDF), all the other pads change
wirelessly . . .
-Jim