Is that where OLEDs come into competition? What would the highest standard plasma be? I've owned a Samsung and an LG, both of which were great, but also pretty affordable so I would imagine there are some upscale models.
Yes. OLEDs are a step up and a great alternative, but again, big box stores make the quality poor anyway so people feel ok buying cheaper models. You notice the difference in home settings.
Pioneer made the best TVs hands down. Their plasmas sell for more used in many cases than comparable new ones. However, they were too high price low volume and decided to abandon the TV game. Panasonic picked up the slack, but plasma just wasn't as popular. The TVs are a bit heavier than LCD, hotter, and not as brightly lit. They just have a much better picture. More cinematic by far. Again, though, the average consumer just doesn't realize it because he accepts what he has.