While I'm a fan of matte panels and Sony I have to say that no matter how many times (weekly) I cross compare the Sony S-Z4100/5100 or XBR6 up on that wall the Samsung B650/B750 and the Toshiba 650U blows them away especially in black levels and the lack of that DAMN HAZE Look.
The Samsung/Toshiba is also comparatively a helluva bargain often. I was big on an upgrade to the Z5100 or XBR9 until the pricing differential did a nearly two for one on a 40" panel that is not LED for secondary room viewing. I also overall find the Samsung's better than their own LED. Wanted to go Sony but virtually everywhere I look for reviews they are some of the worst I've seen on any Sony product line on that auto-dimming crap in the 5100 series. I've had auto dimming on my Sharps "OPC" and used it for five minutes and hated it and turned it off and never used it since and unfortunately Sony made a snafu making it a default feature that could not be disabled and who wants to buy a friggin TV and have to screw around with firmware - let Sony fix their model runs not the consumers unless they throw in a wireless dongle for free! Aren't you guys getting a little tired of damn firmware updates on everything that goes out BETA and we're the guinea pigs fixing their screw-ups and with Sony your also paying a price premium - I have a Sony BD350 that bricked due to firmwares and going around in circles trying to get the damn thing replaced..