I am really confused. I read through almost every page of this thread (Even the stupid arguments) and I went back and forth between these two TV's about 6 times. I finally thought I wanted the f8500, so I went to the owners thread and it's almost nothing but negatives! Look at this page http://www.avsforum.com/t/1463454/official-samsung-pnxxf8500-series-discussion-thread-no-street-price-talk/9030 .
It's either black lines appearing or 41dB buzzing noises or nightmares after software updates. Also, this past few weeks in this thread it seems like everyone is going with the ZT lately... Am I crazy or are Samsung owners not as happy as originally thought? I was really only leaning towards them for brightness but I don't know if it's worth it for all the issues I'm seeing on the forums. A side by side comparison can't tell you that you're going to hate your tv in a week when a software update makes your 3D have bright spots.