I absolutely love the Simple Touch Reader by Nook.  I love the battery life, the simplicity and the size of the device.  I can go for weeks without charging it, I can download books within seconds.  The best part is the size and weight of the device.  I can hold it for hours and read without getting hand cramps.  I also love the e-ink display so much more than a back lit screen.  I have an iPad mini, an ipad 4 and several other devices but none of them can hold a candle to the Nook Simple Touch Reader.  It irritates me that Barnes and Noble doesn't actively sell them because in my opinion it's the best e-reader available.