I am using kindle paper whitefor last 2 years. Very much happy about the product. It’s light weight. Very comfortable to hold. It’s very comfortable for your eyes also. It has built in wifi to download the books from kindle store. The backlight in the device helps to read at night or in low light. Built in dictionery can be used easily to find the word meaning. You need to just tap and hold the word to get the meaning or search the web. You can save the word also. Book marking is very easy.
You can increase the font to enhance the reading experience. This product have a good battery backup, you may need to charhe the product once in a month for moderate use.
The only negative side you can high light is that it’s not colour screen, but colour screen may not be comfortable for your eyes and will reduce the battery drastically. So I am not considering it as a drawback.