Any van you find that fits your body and is comfortable to drive will be fine.
The issues I find to be important are these:
Area behind the back seat. Some vans are very nearly touching the back window glass. That's not enough room for anything. Make sure you get one that has at least a foot behind the headrests and the back window. I also like the stow and go seats so that I can get the back of the van flat to the floor. I can haul all sorts of things with it.
The windows on the back section on the sides need to open. If you are hauling trash they take the smell out and don't circulate it to the front.
Having room to put my purse between the seats. If you have a console it is nice for sure. They are a nice place to put everything but if you are constantly having to unbuckle and climb into the passenger floorboards to get your purse for money to pay for food at the window, well, that's just not fun. I like having some room in the seating area to put my purse.
When you're driving either north or south you'll often find that you have the sun shining on the side of your face. I love the duel sunshades. One extends when you put it over your side window and the other one folds down in front of you. I like this option.
I have to have front and rear separate controls. If the kids are cold and I am hot, well, I am the driver and if I'm too hot I might pass out. So I turn the air conditioner off in the back and turn it arctic in the front. Same for heat in the winter. I like my feet warm but I want my face cool.
I like when I can open the doors with the touch of a button. I like having a remote that I can choose which door I want to put everything in. I also like a remote start because if someone tries to steal it they can't go anywhere because as soon as they try to put it in gear the van will die and not restart until the key is inserted.
There are many many features that separate a van from something special. It all depends on what YOU find important.