This discussion is timely and interesting, I am looking at trading in the 32' Class C on a 4100 King and I've headed in the other direction. I don't have the baggage of owning a truck today so I am looking at the 2013 Dodge 3500 DRW and am opting for the highest towing capacities (nearly 30K lbs.) I can order. I am finding that the difference in cost is negligible when looking at a new truck. However the weight issue did put me off looking at a used truck early on. I had to look at a minimum of a 2011 Ford F350 DRW to get to the 18K lbs. wet weight of the unit. Fords 2010 model maxes out at around 16.7K lbs. with the right rear end.... I understand both Dodge and Chevy post the same limits as Ford prior to 2011 where weights jumped up quite a bit...
We had a hail storm here last year and just about every roof in our end of town needed replaced. It was a boon for roofers but 3/4 ton trucks with tandem axle trailers overloaded to the hilt with old roof shingles were everywhere. I was going down the highway near my exit on afternoon and one of those rigs came over a rise on the expressways where there is a dip in the pavement which cause the rig to begin to whip and within seconds he was sideways in the grass with no control whatsoever. He nearly rolled the whole outfit as I watched in horror as this happened in font of me.
After seeing that I will never put my families safety at risk by overloading a tow vehicle. What I witnessed convinced me that when overloaded your situation can go from normal to way bad in a split second.
My observations and 2 cents.....
Scott