I picked up a new Nexus 7 for my own little Christmas gift. I have an Amazon Kindle Fire and find the Nexus execution to be a lot smoother, with a better default browser and much cleaner access to Android applications. It really bugs me how much the Kindle limits access to so many applications.
I've got my Twitter, Blogspot, and LinkedIn applications installed and ready to go with little to no headaches. Wish the Kindle was this easy. Well done Google!