The iPad is simply too small for me to use for sheet music. My vision is too bad to read the tiny dots! The Dell XPS-18 is an excellent idea but I am still waiting for something around 13 inches. Hopefully someone will produce something about that size. I don't see a way to use the XPS-18 on a music rest while connected to external power. Looks like battery operation is the only option in that configuration. I still use the MusicPad Pro and it does the job I need for now. I have no need nor do I want to carry around a tablet for Internet use.