Another plus point to the Nexus is that although it is Google branded it is made by Asus who are a really well respected tech company. you can access all the current Android app stores really easily (even the amazon one) which means you can really shop around when buying media. and the big deal is they whack £15 credit on it for you when you set up your account
That review you posted says its cheeper than the kindle Fire HD. you can get an 8gb one for £159 which includes the free credit pretty sure that all the new 7 inch tabs that have come out are priced at about £160 for the basic models apart from the stupid ipad Mini.
I think there are a bunch of crappy Acer & binatone tablets for cheaper but they are crap
I read an article that said that Google/ASUS have so aggressively priced the Nexus 7 that the RRP doesn't even cover cost of manufacture and components. they did this to try and get a piece of the iPads pie and only hope to make money on APP sales
The KFHD is fantastic. The screen and sound are amazing. I've got one for my son for Christmas. The only drawback really is the apps in the Kindle store which aren't as extensive in those in Google Play, but you can get round that fairly easily. I did look at the Nexus but the screen and sound are pretty poor in comparison.