You're reading AVSForum. Opinions and experiences collected here are not representative of the experiences of normal consumers; those that post here nitpick and scrutinize every single detail of the sets they buy. In fact, people here pore over every inch of their set, seemingly trying to find a fault. While TVs today seem to be built to lower quality standards than TVs in past years, the complaints on AVS are only the complaints of a very small sample of the buying public. The majority of those who buy an expensive TV are too busy watching and enjoying it to bother posting about it on a message board.
If you're looking around a 46"/47" size, I think it's clear that the Sony XBR-46HX929 (46") is the best set available within your parameters, although pricing would hover slightly above your budget. It's the only full-array LED backlit TV with local dimming currently available in a 46" size, and one of the best-reviewed sets of the 2011-2012 model year. The only other TV that has a similar feature set is the LG 47LM9600, which doesn't seem to be available yet. It's a full-array set with local dimming as well, but seems to suffer from uncharacteristically poor black levels and a low LED zone count - almost every review from major electronics review publications seems to review it poorly. If you want the absolute best picture quality, the HX929 is your best bet.
ht Panasonic 60" ZT60, Monitor Audio: Silver RX6, RX Centre, Radius 90HD; Martinlogan Dynamo 700, Marantz SR5006, PS3, Oppo BDP-103D
2ch Sony KDL-32W650A, Sonus faber Toy Monitor, REL T3, Marantz PM8004, Sony BDP-S1000ES, JVC T-X3 tuner, Apple TV, Peachtree Audio DAC•iT, Sennheiser HD598
pc Energy CB-5, Audioengine D1, FiiO A1