Don't end up with a junky Android tablet that will be unbearably slow and see limited manufacturer support and updates.
This Asus model is essentially a re-launch of the Nexus 7 from 2012, and it's gotten good reviews from
AnandTech and others.
http://www.amazon.com/MeMOPad-HD-7-I.../dp/B00E0EY7Z6
You could also look for refurbished or open box Nexus 7's (2012 edition), they should hit that price point or lower.