My Savanna is a 3500, and I ride around in it empty most of the time. The ride is quite decent for an empty one-ton. It's a LWB, so the fore-aft pitching motions are reduced when going over bumps, and the timing between the front and rear axle encountering the bump is different, so they will tend to contribute to a pitching oscillation at different frequencies. From the driver's seat, the motion is mostly up and down, so the front row doesn't experience the fore-aft pitching that you get when seated high midway between the axles. Going to lunch in coworkers' duallies is punishing by comparison.
The LWB is also unusual in having the rear axle so far back in the vehicle. It should really help with controlling trailer motion, and should make backing a trailer a little less hyperactive.
I live in TX, so the parking issue is rarely a problem. I've only owned the LWB, so I'm used to it.