I already suggested it once, but i will say it again.
The 2013 Nexus 7 16GB is currently $192 on Amazon, and it is still the best deal, providing the highest screen resolution out of all the tablets mentioned on this thread, and packing a more powerful processor.
ASUS are a reputable brand, unlike some others, such as ProntoTec, Chromo or Shamo, which were suggested by ron ellis.
Samsung tablets have reasonable specs, but for their cost, they lack in other features like high screen resolution which are provided by multiple alternatives.
The Nexus devices also receive OS updates before all other android devices.