Hope that they offer you an exchange. The PN60F8500 plasma will be less than the 70" Vizio that you earlier mentioned you were considering. There is a forum here for PNxxF8500 discussion http://www.avsforum.com/t/1463454/official-samsung-pnxxf8500-series-discussion-thread-no-street-price-talk/0_100
. We love ours and have no complaints period. There are several posts about brightness popping when the camera is following the puck across the full length of the rink during hockey games.
1) I and many other owners have never seen it.
2) Changing the cell level parameter to 20 fixed it for some who saw it.
3) Samsung has firmware coming that is said to eliminate it.
So, just ignore that issue in your consideration.
When I was considering exchange alternatives, the rep said that one model would not be available until this summer and that I could wait for it. Suggest that you ask about payment: terms, alternatives, and scheduling when/if they offer you an exchange.