Okay as far as the reflection issue was concerned, i think one can judge it himself from the following video, notice the amount of light entering in the room from the left side
http://www.youtube.com/watch?v=vpMnyCX-Wyw
Also one can read the detailed review on this set which covers quite a lot of things related to this set
http://www.avsforum.com/avs-vb/showthread.php?p=18358288#post18358288
Here is another user review that i found informative, posted by teazle on blu-ray forums
Received the set Thursday. Not doing any formal break-in, just restricting viewing to 16x9 for the first 100 hrs. Comments so far:
1. No buzzing: With ear next to front glass no audible buzz good!
2. Black levels: prob. too light for dark room viewing IMHO. In the dark the black bars glow too much and shadows/dark areas in the picture dont look quite right.
BUT after some fiddling I find the bias light trick DOES work for this TV in a light-controlled room. And works really really well! Bought a 24 strip fixture and a 20W flourescent bulb, 6500K (GE Daylight T8), mounted it between the back of the set and the wall (allowed a 4 gap for this). This allowed me to bump up the contrast (to 63/100) -- much higher than I could tolerate in a completely dark room -- and ... WOW! Incredibly clean, intensely bright whites, just unbelievable range. Perceived blacks are now nice and deep too.
Reminds me of my old bias-lit 1080i CRT. On CRT you just couldnt get a good picture in the dark by the time the contrast was turned down enough so it didnt burn out your eyes, the picture looked weak and lousy (and besides, the black bars would glow in the dark). CRT really needed some oomph with the contrast dial to look right. This LG plasma seems to work in a similar way. Forget dark room viewing which forces you to choke back the contrast, I say put a little light in the room, let rip with the contrast and THEN you get good PQ!
NB: in my experience this doesnt work for all sets on some TVs the black levels are so high and overall contrast so low that a bias light doesnt really help. My LCDs are like this & I notice people are saying the same thing about some of the 09 Panasonics post-rise. But the 50PK550 is very contrasty much contrastier than I expected. The whites look really bright and brilliant. And it does go dark enough for the bias light to improve the perceived black level significantly.
3. 72Hz is simply awesome. Essential feature for Blu-ray movie fiends.
4. She runs a bit hot.
5. Input lag: I thought the set would be useless for gaming ... in fact some casual single-player games are playable & enjoyable. Using PS3 via HDMI, TV on Game Mode with colour set to Standard and all image processing options off (edge enhancer, dynamic contrast etc).:
Heavy Rain slow-paced, no static images no problem.
Wipeout works fine, just feels like the ship has slightly looser handling. Total blast to play, Im getting close to some of my old time records despite the lag.
Arcade shooter types (Super Stardust, Crash Commando) are faintly weird as the lag is noticeable on movement and firing. Still playable though, I might get used to it though I kinda doubt it. Analog sticks mask some of the lag.
Jury is still out on Killzone, the game itself is so laggy it might be unplayable on this TV. The bots are slaughtering me. Hate to think what LittleBigPlanet would be like, that jump button was horribly laggy even on my old 1080i CRT.
For those who play them I would imagine that competitive multiplayer games (e.g. hardcore fighters using the buttons) wouldnt be workable on this TV.
6. Lots temporary IR, but this is the break-in period and should improve over time.
7. Phosphor trails: finally saw one on Sin City, a thin yellowish fringe on one side of Mickey Rourkes head as he quickly moved across the screen. Effect was very slight. Only time Ive been able to detect phosphor trails so far.
8. Motion res: not perfect, can see some slight blur here and there. Motion isnt as fluid as my old 1080i CRT but way better than LCD. Acceptable overall; the occasional slight blur isnt horrendously obtrusive (unlike LCD).
9. Horizontal line bleed: my set has it a bit, though not as bad as in the photos by Dumon or DocuMakers photos of Samsungs (in his horiz. bleed thread). No big deal, a slight effect in the menus, almost never see it during a movie.
10. ABL: I first noticed it testing the PS3 web browser. When you zoom a web page (text on white) the screen dims a bit as the image goes mostly white. However I would not exactly describe the white screen as grey or dirty white, to me it just looks dimmer rather than grayer. All the same I can imagine some people not liking it and expecting the white screen to be full-on blazing like hi-beams. I think itd be too hard to watch. (BTW this TV stinks for web browsing, can see 60Hz flicker with white background.)
11. Dithering noise: Not a problem IMHO. Sitting 68 back from 50 screen thats a bit closer than 3 picture heights cant see the dithering noise. Any closer though and it does start to crop up.
12. (I need to check into this more) Using only 8-bit sources (CATV and BD) I think Im not seeing as much colour banding as I used to on CRT and LCD (8-bit panel). Is this TVs panel 10-bit or higher and is it upsampling the chroma? I cant tell, its just that the banding isnt jumping out at me as much. Processing is for > 8-bit colour (Wide colour gamut option in menu) but does the panel itself support it?
13. Amateur overall assessment: Im floored but I wont gush too much b/c it might just be the novelty of plasma talking. Maybe people whove watched lots of Pioneer would be ho-hum on this set. Not me, I love this thing!
14. Conclusion: Insanely good entry-level plasma for a first-time plasma buyer like myself. Cheapest plasma on the market with the essential features for film buffs: 1080p, 24p support for Blu-ray, nice 50 size big enough to see every pixel at cozy distance. CMS! (See Chad Bs professional review.) Due to drawbacks of input lag and imperfect motion res, better for movies than for heavy gaming / sports viewing. Recommend light-controlled room to manage reflections & glare (screen is shiny) and optimize PQ with bias light.
With better PQ than I expected, this TV will easily last me through CES 2012 when Ill start drooling over something really big (>60 will be cheaper), really dark (0 luminance in 12????) & with third-gen 3D (144Hz???).
Never going back to LCD!
