Aye, lighting is very important with the 600. In my house I have no trouble whatsever finding a good spot - in fact, when I first charged it up, loaded a book and started reading it was two hours later when my partner got home that I realised I was still reading (and hadn't prepared dinner, much to her dismay

). Yet in certain lecture halls with big TL lights far above the reflection becomes a bother - so much so in fact that I often tilt the screen a bit to write instead of laying it flat in front of me.
Still, even with reading by little more than the illumination provided by the light-case' tiny leds I have no reflection or problems - it's definately concentrated lightsources that are an issue for me. I use the touchscreen extensively so it's well worth the price, but for others this might vary