I have the same Asus Transformer as Don Mason, and love it. Along with a 32 GB micro SD card, and 3.0 USB port, it holds more than enough .pdf sheet music and other files... more than I'll ever need. The screen is just the right size, and I also like the option of using it as a laptop or tablet.

BTW I just starting using this Microsoft Bluetooth mouse from Amazon that so far works good. (I could never get the hang of a touch pad).

I suppose the moral of this post is that it is becomming more and more a paperless society, and that's a good thing