LG LM6410 Cinema 3D LED TV

I recently bought the LG 46LM6410. I was very excited about the passive glasses and was upgrading to a larger screen---I had a Sony 32EX500. However, within a few hours of trying to be happy with it---I had to return it. Thankfully the store will allow the trade. The picture quality was very poor when compared to my 3 year old Sony. I was very surprised because most of the reviews on picture quality were positive. But, with cable TV and DVDs, the objects and background of the scenes were very fuzzy. The colors seemed just a bit strange. I was surprised that anyone would pay around $1000 (it came with free Blue Ray DVD and 4 glasses) would be satisfied with the picture. I tried several settings---cinema, regular, dynamic etc....but the changes did not get to the underlying fuzziness and bad picture. I was sad---I really wanted it to work.