What else? What do you guys look for in modern home entertainment?
Size. Size trumps all. So short of a projector (including rear projection), just find the biggest plasma you can afford and lug it away. And plasma means either Panasonic or Samsung - my personal pick for value would be the 60" ST model for a touch under $2k (and therefore $1k cheaper than the 65"). The only meaningful difference between the mid-range ST and the range-topping VT model is that the VT has a blingier frame.
And before anyone says "but that's too big!" - here's a nice recommended viewing distance calculator, not based on rules of thumb or anything like that, but on formal motion picture standards:
http://myhometheater...calculator.html - a 60" widescreen panel has a THX recommended viewing distance of 2.04m and a maximum of 2.87m. While this might seem very close to what is a big TV, bear in mind the intended use is for movies and not broadcast television.
Don't fall for the LED/LCD scaremongering tactic about plasma being susceptible to burn-in and that kind of rubbish.
P.S. The size criterion rule also broadly applies to speakers as well if you're planning on building something more complete - and you should, since while everything else about TVs is constantly improving, the quality of built-in TV speakers is almost at an all-time low. Get a basic AV receiver (can save a packet on mid-range receivers importing from Amazon Germany) and a pair of floorstanders to start (budget $1-2k), worry about stuff like the centre speaker, surrounds, and subwoofer later (floorstanders will delay the need to get a woofer, compared to if you started with a pair of bookcase speakers like I did).
EDIT: I know you're conscious about stuff like power usage and general efficiency of electronics, but unfortunately the current situation is very much the reverse of the above advice. LED-backlit LCD is the most power efficient current mainstream technology, followed by CCFL(traditional)-backlit LCD, and then plasma. However, LED-backlit panels tend to have moderate-to-serious problems with uniformity, leading to incorrectly bright areas on the screen, and any LCD will fall a fair way behind in terms of colour reproduction and motion as well. For what it's worth, most LCD panels used in televisions are MVA variants, which are less accurate than IPS panels (but moreso than TN panels) for colour but produce deeper blacks than both IPS and TN. However plasma squashes any LCD for deep crisp blacks.
Fortunately, the gap is smaller than it's ever been, and another factor is that plasma has variable power usage depending on the image being displayed (i.e. full white screen will suck up maximum juice, a black screen will sip power), whereas both LCD technologies will show more or less constant power usage.
Edited by Humanoid, 10 August 2012 - 01:04 AM.