Our local library loans out Nook STR's, so I checked one of those out a few months ago to try it out. I read in the sun quite a bit--didn't notice any problems with page turns. But after being in the sun for a little while, I did notice quite a bit of ghosting/faded text between page refreshs. I read in the sun quite a bit, so that made me realize I'd better stick with my Sony 650 that refreshes with every page turn.
dordale