[bcf1]

Perhaps another alternative; I use a Mele PCG02 Stick PC, currently available for about $200 on Amazon Canada. I have it plugged into the back of a touchscreen Viewsonic monitor and with an Airturn pedal, it works great. I get a 2 page display, the whole thing sits neatly on a music stand (I had to extend the shelf to handle the thickness of the monitor) and is very portable. I also have a wireless keyboard and trackball plugged into it for those times when doing annotations, as it is easier to use than the touchscreen for more extensive entries. The setup cost me just over $500 CDN (the monitor was used) and I've used it extensively for almost 2 years without problems. 
Barry