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 TC-P60ZT60, Monitor Audio: Silver RX6, RX Centre, Radius 90HD; Martinlogan Dynamo 700, Marantz SR5006, PS3, Oppo BDP-103D
2ch Marantz PM8004, Sony BDP-S1000ES, JVC T-X3 tuner, Monitor Audio Silver RX1, REL T3, Apple TV, Peachtree Audio DAC•iT
lr Panasonic 50ST60, Sony BDP-S5100