I have a Pioneer Kuro 5080, and I absolutely love the picture!
Best Buy had a big sale on them the week before the Super Bowl this year (they threw in a geek squad picture adjust at a big discount). It was not THAT expensive (only a few hundred more than the Panasonic). Well worth it (IMHO).
I had family over for the Super Bowl, and it was just like the commercial: (each person that came in looked and simply said "WOW" when they saw the picture.)
The professional adjustment is worth the money (on a plasma TV, anyway).