They're getting better, but then conventional TVs are getting worse. I'd
say plasmas are probably about equal as far as reliability now, maybe
even a little better, but when they do break they're often expensive or
even uneconomical to repair.
Major concern tends to be the burn in probabilities of the plasma displays,
seen way too many with 4X3 and LOGO burn-in, generally due to the customer's
viewing habits. Even in some of the newer products with the "JOG" processing
in effect have occurred burn in.