The NC offers a great bang for buck product but I don't think I'll be happy with it as I wasn't planning on rooting. It is way too early to know whether it would be good for the long haul so nullifying the warranty is too risky for me personally.
Do you have to activate 3G on the Tab? That just adds to the cost and I'd be willing to throw down $499 without it at BB and forego any cheaper price to avoid being locked into a two year agreement.
And if you get it at a B&M store, you get a 30 day return policy!