Lafiel on 14 December 2012
Nexus 7: more open system, better performance, will be supported with new android versions regularly and for a long time
Kindle Fire HD: tied very closely to Amazon's own offerings, TV output, speakers on both sides for acceptable stereo sound (if held horizontally)
I'm pretty sure it's easier to find free of charge apps for the Nexus as it does have the google play store, while the kindle fire HD doesn't come with that one installed (I heard you can install it if you root the tablet - not sure you want to do sth like that though).
