Re: Best tablet under $250
I have a nexus 7. I use it for the same thing you plan on using yours for. Screen is awesome and performance and battery life is incredible.
Can't say enough good thing about it. For me, my iPad is too big to carry around. Even though I usually carry it in my hand, my nexus 7 fits in my pocket if I need to hold something with both hands.
Unless you are married into the apple ecosystem I think it is one of the better options out there. I would recommend it without hesitation.