We've got a Suburban, and a Honda Pilot. Not crazy about the Pilot, (very low clearance once the seats are all folded flat - Pooka is always rubbing his head on the ceiling and popping the ceiling lights on and off), also, when all the seats are folded flat there is an incline from the back to the front of the car that is a little uncomfortable for them, lying down. (If I speed up, they slide towards the back of the car.)
The Suburban is new, and one of the models with captains' chairs in the back as well as the front - it's awful. The floor in it isn't flat at all, and there are large lumps and bumps caused by the hardware that fastens the chairs to the floor. Not a fan. The old Suburban was MUCH better - all the seats folded down into the floor or could be taken out completely - leaving a flat floor.
We're considering getting a minivan. I've been fighting it kicking and screaming, because I'm not ready to give up on my youth just yet, but I think it might be time.