We'll see. I'm very happy with my NC running CM7 now, but I would like something with a little bit more processing power since I tend to watch Netflix, Slingbox, and when it works, Hulu, on it.
The NC is practically an open device as far as hacking goes. If Amazon doesn't try hard to lock theirs down, I might switch, especially if it gets me my next year of Prime included. Otherwise, I'm very pleased with the B&N product and would likely go for their refresh instead.
Or I'll wait and see which one actually gets a community ICS release first.