The Surface Pro looks like it is sub-$1000 and comes with a 12.3" screen (I think they still use a non-16:9 aspect ratio which is why it isn't just 13"). I had

The Surface Pro looks like it is sub-$1000 and comes with a 12.3" screen (I think they still use a non-16:9 aspect ratio which is why it isn't just 13"). I had one a few years ago and it was great for sheet music. Since it is Windows, you can easily manage PDFs. It had a pretty good built in PDF reader as well that also allowed markup so you could easily add in any extra notes. How reasonable it is to use for actual performance probably depends on what type of music you're playing (if it's piano, you really should print it out or get a special pedal for page turns).