I would not advise buying a Samsung plasma. You will probably have issues down the line. Me? 2011 D series that had 3 separate panels (brightness pops / fbr)... then they upgraded / replaced with an E series 10 months later after purchasing the D series. That was 1 & 1/2 years ago. Two days ago my E series sounded and smelled like firecrackers and died. The issue with the D series made the set unwatchable at around the 6 month period (yes, heavy usage). Blacks would flicker / strobe. This issue has been reported by many in the D series owner thread. The issue with the E series, I assume, is on the power board. If you stroll over to the E series thread you will find that there are other people currently reporting power board issues at about the 2 year mark or so too.
A quick background; Samsung settled a class action lawsuit over bad capacitors on their TVs power board/supply in Feb. 2012. It affected both LED and plasma. There was an estimated 7.5 million sets affected. My E series did not even hit the market until a few months after the settlement so it is not covered in the class action suit. That still does not meant that it does not contain the same defect as those covered.
I should have purchased a Panasonic. My best advice to anybody on the fence about an F8500; wait for OLED to come down in price and a flat form factor. It is your gamble, but you have been warned.
THE ALL MIGHTY MACACASIAH HAS SPOKEN!