The other day I walked into a Sony store and noticed this interesting device. It's A4 in size and can annotate PDFs with a stylus. It has a passive, grey and black display.It could be a pretty good digital sheet music display device, if it was not for the price (Sony dropped it to $999, from $1100 originally, but still...). Also, even though text appears quite sharp, the resolution (1600 x 1200) makes it a bit shy of the 300 DPI that I think should be the bare minimum for e-paper. The latest sticking point for me is the lag between the stylus and the display, as if you were writing with a pen and it took the ink a 1/3 of a second to appear on the paper...Are there any lower price competitors to this? Just curious. I also wonder if this device could be coupled to a page turning pedal.Cheers,CG