Battle of the dirt-cheap tablets: Amazon Fire HD 8 vs. Walmart Onn 8

Apple’s iPads get all the headlines , and with good reason: They’ve long been considered the best tablets for most people. But none of them come cheap. For folks on a tighter budget, I’ve spent the last few weeks testing a couple of 8-inch slates on the dirt-cheap end of the price spectrum: the $100 (but frequently discounted) Amazon Fire HD 8 and the $79 Walmart Onn 8” . They