Thinking of getting this TV, anyone has an opinion on it?
120hz is very nice (particularly if you hook a PC up to it...) broadcasts will move up to that way
before going past 1080p resolution, LG is nothing to sneeze at (I have one of their models, bought it from Amazon WHD no less), being (partially) LED back-lit at least makes it thinner and lighter if nothing else, but smart TV is a joke, and 3D is a worse joke not least of which because manufacturers have already
dropped 120hz refresh rates in favor of 240. The Sony Playstation 3D display (famously owned and used though seemingly not properly configured as a PC monitor by CAG's own Shipwreck) is 240hz, for instance.
If you nonetheless are dead set on the burning platform that is 3DTV (there's nothing bad about having a high refresh rate... if you actually have anything that's powerful enough to drive it) and want one that size I would recommend skipping that model in favor of the updated (or at least higher specced) LM7600
. A new model of that one (on an insane sale) would be about $300 more than the used one you were looking at, but with everything from the "3D" to the "smart TV" not sucking quite as much ass on the latter model (and the fact that one or the other will most likely break down outside the warranty period) the ~$140 used premium is possibly
Personally I'd go with a TV that had a straight LCD or plasma display with a 120hz+ refresh rate (having a 60hz rather than a 120hz model is the only real regret I have with my current LG, but it was WAY cheaper at the time and STILL not that big of a deal) that doesn't have the $2-800 "3D" and/or "smart" (get a roku, or a boxee box, or the solution vizio just released, or a laptop with any AMD APU (OK, maybe not the C-series, but the E series is fine) in it, or go whole hog with an HTPC) labels tacked onto it but whatever's best for your situation (plasma is rarely the ideal).
TL;DR that TV is a waste of money (especially if you already have an HDTV), there are potentially as many as 100 better options from Amazon WHD alone.