I got a white PW3 during a sale for 70 quid w/o ads and mostly use it for reading (mostly PDFs with Koreader and non fiction for work) outside when it's really warm because the white plastic doesn’t heat up nearly as much as my black Kobo or iPad...
Otherwise I'm not too impressed either (the lighting is terribly blue) and I noticed gaps too where front and back connect (I bet the black one has some as well, you just don’t see them as distinctly). But it fits its purpose