Need help picking new TV

[ls7z06]

I currently have a 55" rear projection Sony which seems to do an OK job but I am really wanting to upgrade and try and get as much improved picture quality as I can with a new TV. I want at least a 55inch and could go up to a 60inch. I am not hanging it on the wall so thickness is not an issue. It will go in a darkened HT room so glare is not an issue either. My primary interest is getting the absolute best Blu-ray movie and HDTV sports picture quality I can for $2500 or less. That means most accurate colors, black levels, clarity, and motion smoothness. Plasma, LCD, LED, Panasonic, Samsung,.... I'm confused. I guess the 3 main considerations right now are the Samsung 58inch 650 series, the 55 inch LED Samsungs, and the Panasonic V10 58inch. Any suggestions?