I'm using the Aura HD, my wife has the Aura. For reading, I prefer the Aura HD's larger and sharper screen while she prefers the Aura's smaller size and lighter weight. Personally, I don't find the Aura HD slippery though that does seem to be a common complaint. Neither of us sees much difference between the IR and capacitive touch screen when reading.
If you can find a store carrying the Glo, Aura HD and Aura, try holding them in your hands to see which you are comfortable with.
Good luck!
Regards,
David
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