Yes - On the beat up NJ roads I take to work, the truck was jittery going around rough corners and during the two foul weather days I commuted (rain/snow/slush) the rear was all over the place. I tried various air pressures 60-65-70 psig on the Transforces and it helped but didn't make a huge difference. Obviously my sample size on those tires was only a few hundred miles and I certainly didn't hate them but on my first two commutes with the Cooper's they felt different to me. I am interested in your comment about wear on the Cooper's though, since I plan to tow my travel trailer 10-12 weekends/year.
Well, I'm on potentially worse Pittsburgh, PA area roads, and we have a ton (I believe more than you folks do) of rain, snow, and ice. My 2020 2500 with the Transforce tires seemed to behave pretty much exactly as the brand new Coopers on the '04.
I use the Coopers pretty much universally once the new tires are done. I've been using Coopers on the trucks for a long time - my vendor supports me well, they perform "OK", last "OK" and are reasonably priced. I don't know the size of your trailer, however up until last year I was pulling about 10-12k more than 18k miles per year. The '04 is an NV5600 6spd manual, and there are a fair mount of hills. I pulled from a home in Pittsburgh all the way over to Road America in Wisconsin, down to Barber, across to Jennings GP and Daytona in FL, and up to New Jersey Motorsports Park (Lightning and Thunderbolt tracks) in NJ, and everywhere in between such as Road Atlanta, Summit Point, etc. I also pulled a 3 horse slant gooseneck trailer in addition to that for another couple thousand miles per year, probably about 8-10k. I'd go through a new set of Coopers every 2 years at a minimum.