I finally settled on Kindle PaperWhite as my first backlighted reader. My local BestBuy has it, beside some uneven shadow on the bottom part, no blotch (pink or green), I think I got lucky; not to knock Nook Glow, BestBuy guy told me, the hot pin hole were somewhat common, they replaced a few. Also, the font is slightly blur because of extra layer (if it will bother you), the screen is whiter than Nook Glow.
I have a few e-readers, I like them all - different readers make me feel I am reading a different book. I wonder whether Kobo has totally abandoned US market? I am still curious about Kobo Glo.