FYI, the XPS-18 can be powered while on a music rack. The power input is a small connector on the left side; no problem for the tablet to be flat against a music rack, with power running to it ...

Yeah, a ~13" iPad would be great!

Re: memorizing ... I have almost 1100 songs in my repertoire now; I can play maybe ~200 of these from memory, but there's no way my brain could "assimilate" all 1100 into memory! :-) Alot of times, I'm not so much "sight-reading" as using the display as a "reminder" of an arrangement, or the chords/notes to parts of songs that I only partially have 'in memory' ... I'd love to be able to do all 1100 from memory but I don't think my brain (or my free time to work on such a memorizing task) would allow! :-)

Jim