For watching freeview stick to a 720p screen, the offerings from LG and Panasonic are very good, the X10 or PQ6000 should be on your list, they're both available in 42" and 50". The G10 will give you more when watching blu-ray in its deeper blacks and greater colour depth, but it wont give you anything in SD TV, and you can't make use of the built in freesat. To decide which size to get how far away will you be sat?