Looks like your ProComp MTs are wearing down a little. Have you noticed them getting louder as they wear? I had some of these on a Super Duty taht just got terrible with the noise as they got worn down. I replaced them with the ATs and all was better after that. The wife still runs ATs on her Excursion.
This is my second set of Comp MT's, first set of 35x12.5's lasted 20,000 hard miles. These 33's have 11,000 and seem to be holding up just fine. Still have deep tread, no cups or uneven wear yet.
Don't notice any additional howl, they hum like all my other other MT's.
WAY too much mud up here in the PNW to run a AT, I'd get stuck at the trailhead with the lifted Subarus and unlocked Yodas.
Only stickers I've put on my JK are ORV passes and USFS permits.