A Suburban is a "full size SUV", which weighs, drives, and has the fuel economy of a truck. Minivans are closer in size, weight, fuel economy, and cost to the car derived "mid size SUVs", but they have much more cargo space. Still, the Odyssey claims roughly the same amount of "maximum interior cargo volume" as the Suburban, and almost twice that of the "most popular SUV", the midsize Ford Explorer. It's highly optimized for providing interior space: where the spare tire should be is a deep tub for cargo or to hold the folded down rear seats. The actual spare tire is located in the second row footwell, though you could never tell.

Can you move an upright piano in it?

The thing that finally turned me off to SUVs was when I managed to find an upright piano for $200, and none of my friends with SUVs could help me move it -- I ended up borrowing my mom's minivan (with the seats taken out). At that point I decided that sure, an SUV looks more "manly", but I'd rather have a vehicle that can actually get the job done.

This is true. We used to take horses (miniature horses, but horses) in our minivan. They wouldn’t have been able to stand upright in our suburban. We got some really odd stares when people would see a horse with its head between the drivers and passengers seats, looking out the windshield.

Been there, done that in my Sienna!

Sienna 33.5 ft³, 101 ft³ seats down

Suburban 41.5 ft³, 144.7 ft³

Suburban is almost 2 feet longer.

What year Sienna? Ours is from 2000 and is tiny compared to modern Siennas.