Aye, the cheap one is fine for the specific purpose (testing those issues in the stock android browser an a cheap device) but would be infuriatingly slow for my day-to-day use of the Nexus 7. The slowdown I've noticed is only really when I'm asking it to do more than one thing at once (usually updating apps while browsing heavy pages or stating other apps) which is fairly rare anyway so I'm not particularly concerned ATM.