It's a personal taste matter, of course, but //for me// the resolution on a Kindle has never been a problem, and I've been using them since the second-generation model. If you view a lot of PDFs or images on them, it might be an issue, but I just read ebooks.
The biggest factor, I think, is whether you want buttons for page turning or not. If you get a Paperwhite, the only way to turn the page is to tap (or swipe) the screen. If you get the Voyage that'll still work, but there are now sensors on the edge as well with some sort of haptic feedback.
If neither of these things sound important to you, get the Paperwhite and save $100. It's a great e-reader.
The biggest factor, I think, is whether you want buttons for page turning or not. If you get a Paperwhite, the only way to turn the page is to tap (or swipe) the screen. If you get the Voyage that'll still work, but there are now sensors on the edge as well with some sort of haptic feedback.
If neither of these things sound important to you, get the Paperwhite and save $100. It's a great e-reader.