That is interesting about the "pitching". I can see where this would happen and could be annoying, but I have to say going from our 41' on a Spartan Chassis, to our 34' on a Freightliner chassis, I think the "ride" is very comparable. The only thing I notice is that the new coach rocks (left to right) more, but I think this is more a case of the mounting location for the airbags. The Spartan airbags are further "outboard" than the Freightliner. Over all though, going down the road, I think the shorter motorhome rides every bit as well as our longer one did.
Again, the only way for YOU to know is to drive one yourself over a variety of road conditions to see how you like it.
Ed Headington