I just went over 1K miles so I hooked up the fiver to see how it would do. Took a 15 mile test run over some rough roads and a 75 mph highway. I must say I was very impressed. I came out of a 15 GMC Denali dually and it could get pretty harsh with the bumps. The 350 was quite a bit smoother in my very subjective opinion. It also seemed to get up to speed with less effort. Our fifth wheel weighs close to 16K pounds total.

One absolutely giant improvement was stopping. I never could quite hit a sweet spot with the GMC. It was either to much or too little with the brake controller. It either wouldn't apply enough juice to the trailer brakes making it an adventure in stopping or it would almost lock the brakes causing the trailer to nosedive abruptly which, of course, was felt in the truck. This was the difference between 6 and 6.5 on the controller. The 350 was totally different. I set it at medium power, electric over hydraulic (disc brakes) and 7 on the controller and the stopping was strong and smooth. I didn't try any other settings so if someone has found an even better setting let me know.

One question for anyone who has put the back up camera on a fifth wheel. Does it help keep you oriented with how the back of the trailer is swinging? I have always struggled just a bit with keeping it going straight behind the truck, especially with the dually. I like to watch the tires but the dually fenders block the view.

 

I've found it does help a bit with that. I've had a camera on my gooseneck horse trailer for years now, and I found I could pretty quickly tell when it was starting to move. Also, if you have the full camera system, there is a view that split-screens down both sides of the trailer in such a way you can also use that to easily see a change in orientation.