I have a PW1 and I purchased a PW2 with the intent of handing the PW1 over to my wife.... however, I found I prefer reading on the PW1 so I kept it and my wife has the PW2 (though I do think of hers as my backup

). I found I much prefer the 'blue-ish' color of the PW1 screen/light to the 'yellow-ish' color of the PW2. I can not appreciate any difference in contrast or sharpness of text between the two readers in a side-by-side comparison.