If you?re currently in the market for the best smartphone going around, the $550 Samsung Galaxy S6 should be close to the top of your list. On the other end of the spectrum sits the second-generation Moto E, a great entry-level handset from Motorola that can readily be found for under $100. But what does that price gap get you? Is the 2015 Moto E just as usable in day to day activities as the Galaxy S6, or is the extra cost of Samsung's leading smartphone more than justified?