I saw an LC-60LE757U at Fry's Electronics on Saturday. Off-axis color wasn't bad and clouding seemed reasonable. I really couldn't tell too much on clouding with the lighting at Fry's.
The really strange thing is that at 12:30PM I saw the 60LE757U on the floor. By 4PM they had sold the floor model (or so two salesmen said). The only thing I can guess is that the floor model was their only unit in that store. Looking at Fry's online today, it seems that the LC-60LE757U is sold out at that store but available at other nearby stores. They don't have the LC-70LE757U listed online yet.