I saw it yesterday at Conn's and it was impressive. The best picture of any LED or LCD in the showroom. They did not have a 65" Panasonic plasma on display which was originally my first choice. Not sure now.
Every LED is an LCD as the LED is merely the backlight on an LCD television.
There is no difference in HDMI cables. If you can see the picture without visible dropouts or sparklies, the cable is working at 100%. No other cable will display a better version of that picture. You're simply wrong if you think there is a better digital cable than one that is already working.