considering entering the digital age and getting a tablet for music. Leaning iPad because I already use MacBook and iPhone. This is for music only, so other features are a non issue. What tablets are people using? New, used, refurbished? Screen size? Software for charts? I’ve seen songbook and onsong mentioned, I think. Features I want for sure are transposition and setlist generator (with the swipe to next song ability) I suppose I might use it for play along too. All I can really think of at this point is a program that will transpose songs (mp3s) to other keys. Amazing slow downer? TIA!!