Hi,
We have an 03' GMC Safari, not your typical mini-van, more
like a mid-sized van. I chose it because I wanted something
sturdy, strong and large to tow our camper with. And with 3
children and our tall family, we needed lots of space, too.
I especially like the back storage area, which can hold 2-3
bikes, a very large wagon, or bags and boxes of groceries.
Me and my children like that it sits up higher than some of
the typical mini-vans, that ride more like cars. So they are happy to
be able to see out the windows easily.
The GMC Safari only has one sliding door (not automatic, as we had
previous bad experiences with them on the Honda and Toyota
mini vans). But I have found that in most cases I prefer having just
one sliding door because I only have to keep track
of that one entrance/exit location and the safety of my children
going in and out, as well as everyone remembering to close the door, too.
Though it might be nice if the sliding door could be on the driver's side
instead of on the passenger side? Must be a good reason why it is
designed like that.

The only downside that I can see is that a mid-size van tends
to drink more gas, but we trade that for the towing and seating/space
capacity. It's all what you are looking for.....