Are those the long thin red ones? I think my buddy put them on his truck. It wasn't too obnoxious bit gave a good rumble. On my 4.7 I had a 14" magnaflow (droned a lot), flowmaster 10 (didn't drone as much but was loud), and a straight pipe (no drone but loud AF haha).
Try MBRP! That's what I have on my 2014 and it's by far my favorite exhaust now. Not as loud as the flowmaster but has a ton less drone. It sounds very mean!