If you spend your time mostly in certain rooms, can consider single room conditioners, depending on layout I hear they can cover suprising area if you are good about keeping doors shut. Newer ones afforable and much quiter than they used to be.

My house sucks and by late afternoon the heat overpowers the ac and creeps to 80/81 if set at 78. Considered this though just a floor fan usually works for when im just coming at the computer rather than working in the house.