With these small vans it's worth looking carefully at the length of the loading bay. I went for the Combo because it was a precious few cm longer than some of the others (eg the older berlingos). This made all the difference, as it meant there was enough room for me to lie full length in the back without folding down the front seats. I'm a relative shortar$e though, which helps! Combos (and I assume most others) have a metal bulkhead behind the front seats, at first sight it looks like an integral part of the van, but you can quickly unbolt and remove it, this usually gains you extra space.