Originally Posted by lodolfan
If you could get an insane deal like eric_purdue did (for $2,300) would you guys return a NIB 70" W850b for a best buy demo 65" x900a with what I assume is approximately 3000 hrs of panel use and no 3d glasses? Is that too much usage? I would of course purchase the PRP for it too or maybe get them to throw it in for a little more. The sale price + tax for a NIB one may just be way too much to get an approval from the wifey...
I generally expect my tv to be capable of lasting for 10 years at about 5 hours per day average usage. So I think this unit is capable of lasting at least 5 x 365 = 18,250 hours. So I would assume you have at least about 15,000 hours of life left in the demo, which would be about 8 years at 5 hours per day.
One advantage of buying the demo is you can check out the panel for any uniformity issues up front. So you can make sure you love it before you buy it. In some ways, if you decide to go for it, you may avoid the headaches that many on this thread have had from having to go through many panels to get one they loved.
So maybe it would be helpful to amortize your tv cost per year for the 850b you already bought assuming a 10 year lifespan, and compare that to the price per year of an 8 year lifespan 900a? Then make a decision as to whether you think it's worth it?
I also notice that you mentioned you have the 70 inch 850b, which I believe is generally pricier than the 65 900b (unless you scored some deal on the 70 850b). What made you pick the 70 850b over the 65 900b in the first place? In many ways the 900b is comparable to the 900a, just with worse (I mean active shutter) 3d. So if you chose the 70 inch 850b over the 65 900b, what has you considering the 65 900a over the 70 850b? If the answer is not "awesome 3d", then it may not be worth swapping panels in your case, since I assume you liked the 70 850b better than the 65 900b to begin with.
Good luck in your decision!