I saw the reviews for this 10" RCA tablet at Walmart. The reviews are great. It may be that people just don't expect much and that's why the reviews are as good as they are.
http://www.walmart.com/ip/RCA-Viking-Pro-10.1-2-in-1-Tablet-32GB-Quad-Core/45804384
Be careful, there is another that looks just like this with a faster processor. The reviews are not so good. And is about $40 more.
http://www.walmart.com/ip/RCA-10-Viking-Pro-with-WiFi-10.1-Touchscreen-Tablet-PC-Featuring-Android-5.0-Lollipop-Operating-System/44656208
So far the JW Library seems to be faster than on my other two tablets. (7" Asus, 8" Asus)
I'll let you know how this tablet is working out.