To the device itself: If I were to read and write more than just fiction, me the cumbersome control would (apart from the leaves) without interfering with touch (notes, bookmarks, etc.). The synchronization with the Amazon servers can find privacy excessively great or not. I got (from WLAN, charging via USB only) off. For this purpose I recommend the way Calibre.
As I said just like reading novels, this basic version is all I need. The screen is great, the battery life is great, the value is great. Would I buy it again!