Has anyone that owns any of these new models experienced any buzzing or whistling noise from the units (even try turning sound all the way down and listen)? I have read one report of this from some anonymous person who got it home and it whistled so they exchanged it for another only to have the same problem. Could have been his setup (I hope), but my current HDTV CRT does make a hideous noise which is why I am replacing it ASAP. It buzzes even when it is muted and I have had it serviced twice for the same reason, they say they don't hear anything, but I've had it hooked up to different components at 4 different houses and it always produces the same results.
Also to anyone else out there considering the price jump to the 5 series, it's an awesome set and good price for 1080P, but unless you watch a lot of Bluray movies or play PS3/XBOX360 all the time then I would stick with the 4 series... For instance I don't own, nor will I buy a Bluray player, and I don't play games, and my HD DVR Cable box does not output anything more than 1080i so there is no point really (although I'd love to have it).
Another Also, the 3 series (32" specifically) was supposed to be Samsung's attempt to get massive sales targeted at gamers, they stripped some of the features and advanced settings off, but left a really fast response and dropped the price to market to anyone looking for a 32" LCD for gaming.