Hi,
Most of you might have visited a TV showroom having lots of LCD TVs. Som eo fthem play a beach scene showing shallow waters. Have you tried looking at how this is rendered by different panels.
If you see a beautiful girl or a fish swimming around, you can see rich colours and you can differentiate the panels based on contrast and richness. But some of the images like shallow water gives a better information in terms of rendering objects.
I bought my LG 37LC7R based on this.
Just a thought.