I preordered the 16 gig Nexus 7 right after Google I/O, sold my Kindle Fire to help pay for it and keep the wife happy, and it came a couple weeks later.
It's a fantastic little tablet. I've been using an iPad 2 for about a year and a half, and it's still the best tablet in my opinion, but the N7 is a strong contender. It's become my go-to tablet for picking up and doing stuff. I carry it around the house, and to work, because it's so light and quick to use.
Somehow the iPad feels slow and clunky by comparison, although iOS is still a top notch system with a smooth, slick UI. I would say Jelly Bean 4.1.1 has 99% caught up with iOS, and is ahead in some ways.
I have had no technical problems with the N7 so far. A couple of times, things froze or behaved weirdly, and I powered it off and on again. But other than that, it just goes and goes without crashing, which is an impressive achievement.
I like the fact that the OS matches my Galaxy Nexus; it's the exact same look and feel, same apps and so forth. The single difference is the soft keyboard which on the tablet lacks the long-press number keys along the QWERTY row, for some strange reason; maybe it's a hidden setting I missed?
My one complaint is that the latest Chrome browser for N7 disables Flash, and Adobe for their part won't distribute Flash for JB 4.1. All the talk about Flash being dead is wonderful, but there's still a lot of Flash websites out there and I want my damn Flash! Luckily I found another browser, xScope, and I side-loaded Flash from somewhere, so can watch Amazon Prime videos again.
Unlike the Fire, the Nexus 7 is a fully mainstream Android device that runs almost every app (I did find a few of my apps force closed on the N7, also on my JB 4.1.1 phone, until the app makers updated them to Jelly Bean).
The Nexus 7 comes with GPS and a compass, and it's awesome for navigating. It's a nice sharp screen for reading books, although I prefer the larger iPad when I don't have to hold the tablet in my hands, for example when it's resting on the exercise machine.
The long and short of it is, I'm quite happy, it is a big upgrade over the Kindle Fire, and it holds its own against the iPad 2. The price is quite competitive and I wonder if they're losing money, like Amazon with its Fire.
Oh, and it came with a $25 credit on the app store. That lasts a long time if you're buying $0.99 and $1.99 apps and videos. I bought several great games and I still have about $17 left. So deduct that from the cost of ownership. $175 with free shipping, folks. Don't hesitate; get one.