I wouldn't count the iPad out!

I use my iPad with forScore, and it provides great quality, using PDFs that you can create in your own way, allows easy upload from dropbox, easy creation of playlists (setlists), and has great capability for annotation. If you ever change to another system, you'll already have all your PDFs ready to quickly get up and running.

With regard to mounting it, I just use the keyboard music stand at home, but on gigs I mount it using a gig-easy fixed on a gooseneck fitted at the end of a mic stand. That allows me to bring the small iPad closer in and so making it easier for my aging eyes to read, and I believe, makes it less obtrusive to the audience!