I liked what I saw in the Samsung but couldn't justify the price. Not that it wasn't worth it 'as is'....I just wonder if anything is built to last anymore. My ST has some uniformity issues but they aren't too bad and I chalk it up to the race to the bottom that all TVs manufacturers seem to be running in. Since I expect everything to fail or have issues I don't like to pay a premium anymore. Or to put it more fairly I tend to pick the lower price....I don't mean to suggest that the F8500 isn't worth the price.
My TV's in the last 15+ years.
A 1997 ish 35 inch XBR CRT (the year before they became flat screened CRTs in the gray cabinet). For all I know it's still going strong but it weighed 215 lbs so I left it in place after a nasty breakup in 2007.
A 55 inch Sony three chip LCD RP set. Bought it after getting a DLP home with rainbows all over the place. Traded up to a SXRD after about a year because I didn't like the the bad screen door effect.
The SXRD (A2000?) was incredible. But it developed optical block issues (purple blacks) and Sony replaced it with a A3000. It also developed issues and I gave it away after Sony replaced it with a NX720 that I had to pay cost for. It's still going strong in the living room but my ST60 blows it away picture quality wise.
So after all of the above I'm almost always going to take the cheaper model if the two I'm choosing from are anywhere close in quality. These things are just too disposable to proceed otherwise.