Alas, there are too many of them to recognize as the market's flagship Kindle.
With the increase in screen resolution, parts of even the main screen began to be difficult to read - the "main screen", "back" - are already too small and no longer clear enough. And for Amazon, the temptation to offer you its services more intrusively has increased, along with books now there are 2-3-4 more services. Audible separately, goodread separately, all sorts of Prime and similar subscriptions . It began to strain. It's not convenient to search, whatever one may say (now everything requires separate searches, and the search form is, as it were, one).
The autonomy of the device in my opinion has fallen very much. The reader came with a charge of ~ 50% and a backlight brightness of 18 (by default! ). Connected to WiFi. I counted on 2 weeks of reading in such a default mode . 3-4 hours. But in fact - 3 days to full discharge.
Hot buttons to turn off Wifi and backlight are not provided, which also contributes. We are saved by the airplane mode. Fully charged, let's see how long it lasts. The backlight is either off, or on a not very comfortable 8. Previously, enough for 2 weeks. This is a disaster compared to the Kindle Touch. It seems that the old clothespin-flashlight is still useful.
Bluetooth is only needed to connect headphones . which you probably won't need with your Kindle. You can only listen to what is downloaded from the Audible store. At the same time, Audible does not even give a free download, it requires entering card data for a monthly trial. In dictionaries, at least online, I would like to hear transcriptions of words . but alas. Accessibility still has VoiceView, but it is only available for the English localization of the system, as far as I managed to figure it out.
And here we come to the most important disadvantage of the Kindle - there are very few supported formats, this is not news, but the fact that they are getting smaller is already starting to scare (I compare it with the old Kindle Touch): MP3 support has disappeared, what was called Active Content has disappeared ( yes, yes, on Touch I had amusing games like Shuffled Row and some card games).