Yesterday, I went out for a picnic. Moreover, that was a sunny day. It should be enjoyable. But I got some free time. That was a great time to read. Thus, I got out my Android tablet. I wore a sunglasses and under a strong sun light. I really could not read a pdf file comfortably! Then I got out my Kindle. That was a different experience. That was no problems at all. So, I think eInk is better for reading. Even we have a tablet, but an eInk reader is still essential.