If you are looking for 3D stay away from Sony and look for some 3D THX certified TV. If it's just 2D quality what you are looking for Sony is fine but overpriced. I had a KDL46NX720 for 2 days, I was looking for 3D, this is my review:
If you are looking for a 3D TV this is not a wise choice. I returned 1 KDL46NX720 and after checking out 2 other models and a KDL55NX720 at the sony store I found out they all have a serious problem in terms of 3D. The 3D effect decreases to almost no 3D effect at all at the upper side of the screen. The middle and lower area look OK in 3D with minimal crosstalk, but in the upper side of the screen there is absolute crosstalk, no 3D effect at all. This is more evident when looking at objects with good contrast that are meant to be distant or pop out of the screen. Pay attention to this if you own one of this TVs.
Whether it be 3d games, bluray 3D, 3D internet/USB videos or 3D TV signal it's always the same. It is not an HDMI cable issue. It is useless to tweak the picture settings. The dejudder setting makes it even worst. Some other people reports the same issue but at the lower side of the screen.
Stay away from this if you are looking for a 3D TV including the series EX72x which have the same problem.