My budget is $4500. I am slightly flexible, but have roughly this amount for a 70" flat panel. I don't need 3D, but wouldn't object to it either. I really want great picture quality, and don't care about apps, smart tv, etc, sound....just picture quality, and 70". Currently I have a 55" Samsung series 6 (or so I believe, since I'm at work I can't verify this). So this being my requirement, what would you purchase if you were in my shoes?