The Aura Edition 2 is about the same size and weight as the Glo HD. Both have a 6" Carta E-ink screen, frontlight, and touchscreen, and they run the same software, but they aren't quite the same device.
Launched last year, the Kobo Glo HD has a 300 ppi screen just like the one on the Paperwhite, Oasis, and Voyage. The Aura Edition 2, on the other hand, has a lower resolution 212 ppi display (1024 x 758 screen resolution).
This is one of those ereaders which I really can't see why anyone would buy. For an extra $10 you can get a much sharper screen and the exact same software features.
Sure, I was disappointed by the Glo HD's hardware when I reviewed it last year, but it is still a better value than the Aura Edition 2 (what a stupid name).