Summary: Stopped working before 3 years old. Powers on to the "Samsung Smart" screen and then cycles between that and "HDMI" in the corner of the screen. It is out of warranty and Samsung support has directed us to a 3rd party repair company. We'll see if it is worth repairing.
Summary: Bought one 2nd hand, and it still runs great. The two things I was worried about, 1) sound (it sounds amazing in a big room, and no additional speakers). 2) Glare, it's in a bright room, but when you close the curtains (one is even missing) it isn't noticeable to me or my fiancé. I was lucky I was able to test out for the brightness flashes before buying. Very happy with the purchase.
Summary: This TV is a great deal, great picture quality, however it suffers from flickering changing levels. One moment it's a stunning picture, the next moment the blacks are grey. Other than this inconvenience it has been great TV.
Summary: pn516500 quit working just after 1 year. The Web shows a class action suit for faulty capacitors over a number of years. Since my particular model was not on their list of models, the customer service rep said I am on my own. So, faulty capacitors, the bad power supply or whatever is wrong with mine, I would stay far away from Samsung. $1200 and it will not last 2 years. Your better off at rent a center. I've read that Panasonic has much better quality control.
Summary: I love the look and feel of this TV. It's has a very nice picture, good menus, and the smart options work great (Netflix). The main issue I've had with this TV is the volume. It seems like the volume or sound on this TV is too low. I either cannot hear the TV or have to turn it up and it's too loud. I've tried making all the adjustments to the sound available, but have not been able to 'tweak' it to an acceptable level yet. But,did I mention it looks great?
Summary: the tv was wonderful out of the box. i loved it. 9 months in, the screen cracked on me. i contacted samsung. the only thing samsung did for me was give me the runnaround. they had me jump through a bunch of hoops by taking pictures of the sides, back, front of the tv and providing my contact info, serial # asap. after getting all of that done, they tell me, "sorry, we can't do anything for you b/c the cause of the damage was from an 'impact.
Summary: The picture and price are great, does a wonderful job with non-HD (older, low-resolution SD material like DVDs, most cable shows, etc). Has a built-in "smart" TV mode with limited functionality, mostly used for connectivity to Netflix, Hulu, and things of that nature -- otherwise it's mostly useless (although there are a handful of other apps that are OK). Does a pretty good job in sunlit rooms, and has a good viewing angle.
Summary: I was hesitant in purchasing a large TV online without at least seeing the same model at a store first, but I saw this TV with a good blu-ray/3D glasses/Shrek combo that was difficult to pass on. My girlfriend was doing everything she could to convince me not to buy a huge, expensive TV. I was tired of my Samsung 32" LCD TV and wanted something bigger. I still can't believe I pressed the submit order button, but I'm glad I did.