Hmm, I always bought the Kindle editions because physical books are a pain in the ass to read. Before the Kindle, I even resorted to a WinCE device (built-in backlight, easy rotation for any position). Kindle Paperwhite is simply the best reading experience I've ever had in my life.

The fact I could get a paper version doesn't even factor into my decision. Actually, the price rarely factors into the decision, as the difference is usually only a few bucks anyways.