I've got to chime in here -- there's a lot of bad assumptions and just wrong data in this thread already.
How exactly is it hard to find a "full HD" plasma?? There is no shortage of 1080p plasma screens on the market, from a ton of reputable companies. Go to any store, online or in person, and you will find 1080p plasmas just as you will LCD and LED.
Saying something so general as "LED>LCD>Plasma" is stupid. There are a ton of low end and old tech LCD panels that will not hold a candle to Plasma screens. In many ways, the tech behind it has little to do with the quality of the TV... you need to research the actual panels used in the displays and the individual picture quality of sets you're interested in. Black levels on Plasmas are still the best, in my personal opinion, and are only recently being rivaled by LED lit LCD panels. LCDs will typically not have black levels anywhere near Plasmas or LED. Whether that matters to you depends on your viewing habits. Color reproduction is an entirely different, yet related, discusson as well. I'd say that new LED tech typically has better color reproduction than both plasma and LCD, but there are always exceptions.
Also.... in case someone chimes in here about plasma burn-in, I assure you they are about 10 years behind the time. Burn-in is not an issue on any quality plasma panel that is watched in a typical fashion these days. Half life of the gases is also a non-issue as you'll replace the set long before you face that problem. Altitude issues are true, so if you're above 6000ft above sea level, don't get a plasma.
Go to a good store and find some sets you like. More important than online opinions (including mine) and reviews, are how you perceive picture quality, especially colors. You may find that you really like the way Sony colors look compared to Samsung, or vice versa, and you'll only notice that when you see them in person. Most companies (and tech) have a certain "feel" to their picture quality and you need to know what looks best to you.
I've owned all 3 types of TVs, and currently have a 50" Samsung plasma (1080p) and a 46" LED. I've owned 3 LCD (non LED) panels in the past from various companies. You need to go check things out in person. I personally think that Samsung's colors look "best" to my eyes so I've stuck to them. Find what looks best to you and then look into specific models. Compare those models against each other and against your use cases (enough HDMI ports? proper settings? calibration options if you're going to dig into that world, etc)