[psbp]

I don't have the original, it's the 2013. I've heard 4.3 fixes the lag issues with the original. Battery life lasts more than a day for me, and it only has noticeable responsiveness problems when I quickly scroll down web pages.

[halostatue]

My Nexus is horribly laggy on a lot of things (and if I ever have more than one tab open in Chrome, the tablet is damned near unusable), even with 4.3; the battery life for me is measured in hours.

For me, it’s a little worse because the software is still so far behind in terms of availability and usability—there’s so very little that the Nexus does better than my iPhone 4 that I don’t want to use it.

[psbp]

You might have a bad unit. Mine is just iteration 2 and I have none of these problems. It's pretty quick.