I spend so much time on my Kindle that I'd be willing to invest a few hundred in upgrading from my PaperWhite just to have a slightly better UX. Having buttons again to change pages is what I'm most excited about. Plus I've always wanted faster page turns, which is always increasing with each new release.
I didn't get excited for the Voyage since it seemed so much like PaperWhites.
Knowing I spend each night and hours on weekends holding and interacting with the device makes the price point for a 'pro'-style version reasonable.