When I first got my paperwhite, I was very disappointed with it because I think the fonts look fainter than my kindle keyboard. I kept examining the screen, spotting discolourations, uneven light and obsessed with changing the light settings for ages. Because I also live outside the US, I didn't really want to exchange unless there's major defects.
I showed my sister who don't use an ebook reader and she says it looks great and thinks I'm crazy. So I tried using it for awhile. I'd been using it for a few months now. Certain light settings will highlight all the things that irritate me. Luckily I found a light setting that I am comfortable with. Screen looks great with lots of light/sunlight. But I don't really notice once I start reading.
It's your choice ultimately.