Questions About a New Android Reader

I want to buy a new tablet used for reading (had kindle before). I am looking at a 10" or 8" minimum. I have some questions. It needs to access my kindle account and google apps. I hear some 10" lack enough resolution to present clear text at that size. What resolution do I need for crisp text?

The following are available in my area:
For 8":
Samsung Galaxy Tab A 8"
Lenovo TAB 2 A8 8"
Lenovo Yoga Tab 8" 16GB

For 10":
Samsung Galaxy Tab 4 10.1"
Lenovo TAB 2 A10-70 10.1"
ASUS ZenPad 10" 16GB
Samsung Galaxy Tab E 9.6"
Lenovo Yoga Tab 3 10.1"