The nexus 7 is worlds ahead of the nook. You’ll be amazed.
IMHO, 16g is ideal and is what I have. Remember that with free apps, you can use a flash drive via usb. Rarely need to.
Price: I got mine at staples which sold the 16g wifi model for $199 which is cheaper than Amazon and most places. On the other hand, when the new nexus 7 comes out (July?) the current model may get cheaper.
Biggest problem for me is that it has only wifi. But it can be tethered to your phone for locations with no WiFi.
Look at this video for a good introduction to the nexus 7.
Hope this is helpful.
Sent from my Nexus 7 using Tapatalk 2