I just buy one as the X'max gift for my husband.
He don't like those with 內置tuner. It is because he would like to connect it to PC (for HD TV, recording, and other functions........). Therefore, we don't need 內置tuner.
Sharp 46' is in promotion now. However, people said SONY is the best.
Do you need the recording function? If yes, then no need to buy 內置tuner. It is because lots of the tunner (for HD TV) can plu a hard disc for recording function.
Most important, 內置tuner is 4-5k expensive.