Is there a good performance muffler that's quiet?

I had the exact same problem WITH the complete exhaust exiting at the bumper. I liked the noise when not towing, but when hooked up to my trailer the drone became really annoying.

I ended up putting my stock muffler back on until i found a better fit/sound. My research also found that the 70 series is supposed to be good for towing, I just havent gotten around to putting one on yet lol