Dammit! When I bought mine last week I got my 80u for $799, because there were no good deals online. Oh well, the only significant changes are 10,000 extra contrast ratio's and speaker on the bottom. Im still satisfied in my choice.If you can, go with the pz85u, it's worth it.
right now the 42" pz85u is on sale for 799.99 on amazon, which is cheaper than the pz80u