don't know why folks just won't step up and tell you what they would buy and tell you why you should buy it. I think a lot of folks just want to avoid conflict. That having been said, I will play the game. All the diesel trucks have something special. GM has the Allison 6 speed, that feature is hard to beat, Ram has the industrial Asien in the 3500, Ford has rolled out a brand new V8 diesel and GM has the tried and true Duramax. RAM has the tried and true 6.7 turbo Cumins. The new RAM chassis and the Cumins is a formidable combination. And is Best in class 5 years running. So one must do their homework here. Sometimes you find information in the most unpredictable places. I'm going to recommend that you go to YouTube and search problems new XXXX diesel. You choose the brand. See what you find. I bet you will come back with a whole different idea, just like I did at the last minute. I was drooling over a truck and was searching it on "youtube" dreaming away until I found a little article about a very critical problem. I changed my mind at the last minute, You can see which truck I bought, so I give you two guesses which one you should search. My power train is warranted for 100,000 miles, and I intend to earn the 500,000 mile badge. As far as load is concerned if you are running SRW the load limit is going to be 6400 LBS, so 2500/3500 does not really matter. IF you need a dually then you gotta go with the 3500. The advice to choose the 5th wheel you want first then get your truck is the best advice you can get. I will say that if you do not want a dually you can have a set of custom 17.5 in wheels made for commercial tires, that way you can stay SRW. I made a mistake listening to the sales guy. While it is true that my 2500 walks and talks pulling my fiver, a 3500 would have been a little better in the springs and possibly ordering the aisein transmission. Don't get me wrong my 2500 is plenty adequate, but I have had to make allowances such as load levelers etc. Ultimately your tires determine the load, drive train determines what it can pull, truck plus trailer. good luck and be sure to search XXXX Diesel Problems. The video was posted by a XXXX diesel mechanic at his dealership, very informative video, I wonder if XXXX made him take down the videos. Whoops!!!!!