All plasma will soon be gone except maybe boutique stuff:

Plasma has:
  • Burn in issues - not bad anymore, but still present.
  • Problems above 6,000 foot altitude - Voltage too high with arc over problems.
  • Finite life.
  • A picture that dims a little every year.
  • A problem with the best colors due to limited supply of rare earth phosphors.
  • Excessive power consumption - Some states are considering banning the technology outright.
  • Will never be cheap or light, too much glass.

I still love my LED DLP, best colors of all, bright, dirt cheap ($989 includes shipping for 56" Samsung on line). It has no moving parts, no fan. I don't think 120Hz sets are out yet, but screen draw time is so fast, 120Hz or faster refresh is a non issue.