Quiet tires?

I have the tow vehicle in my sig. I currently run BF Goodrich All Terrain KO's. It seems they are increasing in noise as they wear. I think I might get the rest of the summer out of them. I am starting to do my research on replacement tires already. I would like to stay with an E rated tire. Probably and all-terrain or maybe a hwy tread. There has to be something quieter than what I have. Recommendations? Thanks, John.