After many years using different ereaders (a couple of iRex, kindle 4, and now an Aura) I opted for not using covers anymore.
Price is too high comparing with the device price itself, and considering the time between switching ereaders (2-2.5 years) I think it isn't worth the hassle.
Nevertheless, IMO Aura is the device I owned with the most fragile screen, possibly because the screen and the borders share the same surface level, in other ereaders borders are slightly elevated respect to the screen. [I mean for scratches, not hits.]
So since these 2 years I've got a few scratches in the Aura, not important at all - I don't notice them while reading -, but a good excuse to buy another ereader in a few months
