every now and again, I ponder using my Kindle Fire as Amazon intended, i.e. reading only in amazon formats, then I read posts like this & remember why epub + 3rd party apps are so much better
the only pro seems to be the x-ray facility but having seen that in action on a couple of prime lending loans, I am not over -impressed, it seems to me that it would be tricky to use without getting plot spoilers ( as in
so he must die on page 273, cos that's his last appearance )