We have twin Sony Bravia's in our family room. We have a very large family room and the fireplace separates 2 identical entertainment cabinets and the Sony's are in the cabinets. Works out great if you want to watch 2 things of have all action!! I think they are somewhere between 42 and 46" each.
We have a Samsung in the Bedroom, 2 Dell 52" Plasmas (I don't recommend the Plasmas.. they get very hot) We've had the Dell's about 7 yrs each but neither is used much.. they are in game rooms. Daughter has a small Sharp in her room that is nice, LCD.
We paid less than $1000 for the Samsung, about $1300 maybe for the Bravia's, $400 for the Sharp, and when we bought the Dell's we paid over $3000 each. We'd buy the Bravias again in a heartbeat.