It is amazing the difference between the Expy and the Sienna -- without the airbags (and even some with them), the Sienna used to porpoise all over the place. The truck? Not a bit.
And that's fine - there's a reason I kept my van and bought an 8 year old SUV - my van does it's job very well (people hauler), it's reliable, and I'm loathe to part with it -- except for towing.
Thanks,
John