Save your money a little longer and grab a 55" 8 series (Samsung UN55KS8000). I believe the price difference from the 7000 you mentioned is appropriate. PQ and performance is much better.
Look ahead for Super Bowl discounts soon-ish. It will likely be as low as $100-300 less than the currently lowest advertised retail price @ Amazon or BB. YMMV.
I'm looking for a 55" TV <$1,000 and was thinking about the Samsung UN55KU7000FXZA, but was disappointed to see the CNET review didn't give it high marks for picture quality.
In the review it says it doesn't have the picture quality at the price to match competitors, but it never says which ones have the top picture quality. I know an OLED from LG or one of the high end Sony would have better picture quality, but those are above my budget.
I don't care about Smart TV features or having a curved screen and mainly care about good pictures quality.