i use both. I don't turn the AC on until hubby can get help putting it in the window, which normally happens around July.
It's really hot and humid here already this year but I'm keeping the doors closed, and blinds drawn and using just fans. I have a ceiling fan that I use and a table fan directed at hubby's chair.
I don't like humidity, but I can take the heat most of the time. Hubby can't. If it's below 75, sometimes I'm cold, sometimes I'm dying from the heat (all due to my poor circulation from my surgeries).