I would agree with RLA and add that plasmas also typically have a very reflective front glass which makes them very tough viewing during the daytime.
Don't know about the life, since plasma is currently advertising at 60,000 hours now. Still, a ton of time.
How is the brightness of the two? I always think LCD looks just a bit brighter, but maybe that's just me.
No burn-in
Less power hungry
Less reflection (better during day)
Brighter (?)
Give a look at the NEC 46" or 40" LCD displays, they are pretty much what I would recommend.