I liked my Amazon Kindle a lot… mainly because of how easy it is to get Japanese books for it, and because the dictionary lookups worked rather well. However, I don’t like it currently because they broke lookups (and some other functionality) with their last forced update:
Will they fix it? Possibly. Would I buy a Kindle right now, hoping that they’ll fix it soon? Definitely not; if I really, really wanted one I’d wait until it gets fixed.
(And another thing to keep in mind is that Kindle can only synchronize with one Amazon account at a time. So if you buy stuff on Amazon Japan and whatever your “local” Amazon is you’re out of luck; you cannot be logged in to both, and logging out and logging into the other deletes all downloaded books.)
That’ll probably be what my next e-reader will be like. Running ttsu and yomitan on an e-reader sounds heavenly!
