I wonder if they've improved these over the previous NX700/NX800 models; I owned the 46" NX700 in May and had to return it; between the horrible off-axis viewing, the 'cones' shadows at the top and bottom of the screen, and the cracking/creaking noises during the first hour of warm-up/cool-down, I had to return it.
Considering the $2400 i paid for it, the significant flaws were just too much. It looks like the NX710 would be just the same.
I bought a 40" EX700 (next model down and next size down) for $1300, (about half the price!), and have been MUCH happier with it. The viewing area is FAR better, and no creaking noises as the construction of the TV is metal instead of plastic.
The only downside of the EX700 is that it doesn't have the cool 'monolithic' glass stlying (which I suspect is the reason for the diminished viewing angle). Given the improvements I'd have to say the EX700 is much better!
I'm currently considering the local-dimming LED back-lit HX909, trying to decide if it's worth the steep premium, given that even the HX909 isn't flawless, with the slight blooming issue...