I guess I'll just have to go play with some readers and see which seem best or better than what I have. If none seem any different, I'll stick with the PRS-650.
@Harry: I think you might be right about filtering the flash out... the more I use it the less I notice it. Its just that when I first bought it, a few pages in, I was ticked off enough to put it away and wonder why I bothered. I'll persist.