The Aura HD uses a completely different touchscreen technology, Infrared sensors on the edges (leaving the screen clear) rather than an capacitive layer over the screen, so I wouldn't assume anything there.
As for saving articles, if you mean Pocket(formerly Read It Later) then that's available on all current Kobo eReaders except the mini:
http://help.getpocket.com/customer/p...pocket-to-kobo