1.6 inch
This is the most common electronic paper book size, so the choices are also very rich, but the functions are basically limited. The best cost performance is undoubtedly kindle Paperwhite3, with a price of 958, less than 1000, a screen resolution of 300ppi, workmanship, book resources, brand awareness, and so on, all of which are very balanced. As a pure reader, there are almost no short boards, and the cost performance is very high, which is very high in this size and price.
2, 6.8 inches -8 inches
There is nothing to say about this size range, because it is really of little use. When it is used to read comics and PDF, it still feels small, the portability is not as good as 6 inches, and the price is relatively high, which can be basically ignored. The price is basically around 1500, which is cheaper than Job's, but the workmanship and system are average, and kobo's workmanship is ok. The system is not localized enough, and the price is high, so it is not particularly recommended.
3,9.7 inches
This size can basically meet the needs of large-format PDF, without looking at it like a small screen, and most 9.7-inch electronic paper books have pen writing function, which is also a good choice for friends who like deep reading. Basically, the price is around 2000. The static PageX Carta with handwriting and Android 4.4 is very compatible with third-party apps. The machine is relatively thin and feels good. Mid-range price, acceptable, good cost performance.
If you don't need handwriting, the static PageX 1 Carta pure reading version is more cost-effective. The key is that the third-party reading APP and news consulting APP are well supported, and the price of 1899 is cheaper than most 9.7-inch electronic paper books, which is worth starting with.
4 13.3 inches
This size is most suitable for reading, close to the size of A4 paper, and it is comfortable to see everything. There are not many choices in the market, but the prices are generally high, all of which are more than 4 thousand. If local tyrants can afford this price, don't mind the cost performance. Performance and strength are the most important, aren't they?
5, digression, 10.3 inch
This size is very small, only significant in foreign countries, the price is more than 3000 yuan, and it is not cheap. Delivery has only recently started. It seems that no one has got the evaluation yet, but watching the video demonstration, the handwriting effect is good, so you can pay attention to it if necessary.
Finally, the most important thing about cost performance is to look at your own needs. Cheap is good, expensive is also expensive. It can never be top-notch, and the price is still cabbage, which is a bit excessive. Considering the price, performance, system optimization, workmanship and brand, what you like best is high cost performance, isn't it?