I love my Nexus 10. I've had it exactly a year this month.
I've had 3 Nexus 7 devices (one 2012 and two 2013s). The Nexus 7 is great for getting on the train or travelling with to the supermarket, or gym, etc. I use it mainly for audio books, reading and have 4LTE / 3G contract for 2 years on it. 32 GB. One of my 2013s was lost and never returned, so I had to buy a new one and do not regret it.
However, my screen cracked on my new Nexus 7 and my Nexus 10. I think the screens are a little weak.
I also have an ASUS HD7. Also very nice. Screen seems stronger.
The Nexus 10 is great for taking into the bathtub or going to bed with. I use it all the time. I keep it on a book stand next to my computer on my desk and play TuneIn Radio through a bluetooth speaker I have on the desk. It's great for reading and listening to audio books on.
What I do not like is that Google constantly changes things and often for the worse. I do not like the new camera features with the camera button on the top. I hate it. Also, the default photo manager was changed to Google Photo or Picasa from the old manager. I really liked the features of the old manager a lot. The old manager is still there, but it is no longer the default manager.
Little things that tick me off, but overall a good experience over the last year with Nexus 10.
In fact, I'm sad to read that they may likely be killing it off. I've done several Google searches over the last several months looking for a second generation release of the Nexus 10 but it looks like it has been discontinued.
However, Google refuses to actually come and explicitly state what they are doing with Nexus 10. Which is irritating.