The iPad mini is an experiment – wifi only and just 16G, so not planned to replace my “big” iPad.
May put the Nook into the museum though (or limited to use on the beach where sun makes LCDs a poor choice).
The mini is thinner and lighter than the Nook and just slightly larger width and height. And iBooks is way nicer than the somewhat limited Nook software.
The new Lightning connector is very slick – easy to connect and feels a little less fragile than the complicated 30-pin connector of yore. Yes, it’s a pain to have to (slowly) transition all of my cables and devices, but the 30-pin connector had a good run.
The display is certainly less crisp than the Retina display on my full-size iPad, but it’s not bad, just not as good. If you’ve never spent time using a Retina iPad, it will look great, as the dpi is actually better than that of the non-Retina iPads.