Just a follow-up from an owner - I bought this TV around February, and... it's a great TV.
I didn't care very much who made the glass beforehand as long as people here said it was good, whatever it was. Now that I have it and see that it's a great TV I don't care if it was made on Mars - it looks great.
I haven't had any of the color push issues that people seem to freak out about. I have seen the older Maxent 42" and its green-push issue and wonder if all the green tint concerns are people mixing up the 2 TVs, or worrying too much because of rumors that have drifted from that TV to this. To be honest, this Maxent has the best color representation of any display I've used - computer monitor or TV.
I've also found that all the rumors about bad picture quality, like bad shadows, to be untrue. If you've got that going on with your 50X3 (and it REALLY is a 50X3), it's your input. This thing's got a clean picture for any clean input.
I've also done one thing to this TV I imagine most have not: Shipped it across country in a wooden crate. Granted, I surrounded it with a box spring and a mattress to protect it, but nonetheless it survived the shipping from Boston to Los Angeles. The one thing I'd recommend for moving this TV is, take the side speakers off if you normally leave them on. The metal that attaches them can withstand force relative to the speakers but not the force of the TV shifting. One of my speakers was bent back 30 degrees when it arrived. I bent it back pretty cleanly with a wrench, though.
The 3 negatives I'd have to say, if I had anything bad to say:
The Zoom mode, to zoom up HD-shaped shows that are being shown with black bars on the top and bottom, only works in S-Video and Composite mode. This is the one thing I strongly dislike about this TV, because now and then a Component- or HDMI-fed channel has this faux-HD sort of broadcast, and it just looks silly. My current workaround is to feed my Digital Cable Box in through both S-Video and Component; that way I can kick down to S-Video and Zoom if need-be. If you're buying this TV, plan a workaround like this ahead of time so you aren't frustrated; you'll need your outputs to be flexible because of this TV's inflexibility.
The TV has a noticeable buzz sound, especially when you first turn it on, when it's warming up. I'm told this is just how plasmas work. It's extremely quiet - fine with me. It is occasionally audible to me in really quiet movies, which annoys me personally, but it seems I have better hearing than those I watch movies with.
The TV has a serious impact on heat and electricity usage. Showing an all-white image like a GAP commercial uses 550Watts of electricity (less for darker images) and generates a lot of heat. On a hot day that's heat you may not want in the room, though it was pleasant in Boston's cold winters. Turned off but still plugged into the wall it's a bit of a "vampire device," using 10Watts when off. Consider unplugging it at night; it will avoid the vampirism, and protect your expensive TV from lightning and power surges, for free.