Hi! I'm rushing out after work today to buy my husband an LCD tv for Christmas and am torn between 2 sharp models. The LC32GD4U has the HDTV tuner built in while the 32GA5U does not have the tuner. The difference in price is about $600. I had been dead set on getting the LC32GD4U but then I read a couple reviews on Amazon and others where consumers have noted that getting the tuner built in is not really cost effective since some HDTV services provide a tuner. At our home, we have IO (Intereactive Optimum by Cablevision). Any advice on which would be the better purchase would be greatly appreciated. Or if there are any other discernible differences worth mentioning (i.e. GD4U has detachable speakers but GA5U does not). Thanks in advance for the help!