I very consciously did not buy a Kindle when choosing an Ereader about a year ago. The Kobo H2O is incredible and has served me very well. The format support is wonderful, and the stock OS does more than I need (though there is a whole community of custom OSes that also look cool). Combined with Calibre, I don't even see what the Kindle value prop is.
It's trading customisation/flexibility for ease of use, at a (potentially) higher cost. The older kindles with 2G/3G "Whispersync" functionality had another major drawcard of working just about anywhere, even if you didn't have wifi coverage or a phone with data services. I have in the past used this to load several more books while in an airport in a foreign country between flights. Many people if you hand them a Ki…
I have around 50 books and a dozen of comic books on my e-reader.
It works perfectly without any connection whatsoever.
I'm not sure that being able to download a book while sitting on top of Mountain Everest it's a such an important feature, but YMMV.