City Lights has by far the best view in Charlotte! The King of Pops in Champagne is to die for, and is perfect with the weather right now. But the drinks are very expensive, 14 dollar cocktails and not a particularly good menu are balanced out by the view and decoration at the rooftop bar. Service was good for us but I've read that they aren't usually the best.
It's a good spot for groups because of seating and it's not too windy for pictures (just throwing that out there for my fellow females), I'd prefer going here than Fahrenheit anyday!