a ramble from one who owns a Chevy Express Van and a Promaster...
Our 2010 Chevy has a whopping ~45K miles on it and about 5% or so of that is off pavement as a rough guess. Still looks and behaves new. I fully expect it to be around as long as we want it. It has been my wife's DD since we purchased new in fall of 2010.
Our 2017 Promaster 159wb HR RB will be one year old this September and as i type has less than 1,500 miles on is and has been my DD. We don't put many miles on our rigs since we live ~4 miles from our workplace.
All that said, i know nothing about vehicles, i pay the shop(s) to maintain and check them. They are in top shape. Don't mind doing so as i'm a geek and artist, not a mechanic, and have no desire to learn... YMMV. I applaud those who have those skills and am happy to help put a meal or two on their table.
As to interior space? The PM ROCKS!
As to road manners during our test drive(s) of Transit RWD, Transit 4x4 Quigley, Sprinter RWD and Promaster FWD... All four were taken out on equally sunny dry days on the same test drive area, only the PM was able to drive the entire course/roads without any slippage. All the RWD vans had ~2K lbs of concrete blocks in the payload area over the rear axle, when i asked the dealer this was for assisting in handling and as an example to what it would be like under use. If anything we went in _feeling_ we were going to end up with a Transit as we had ruled out (but wanted the test drive anyway) the Sprinter due to the lack of dealer support within a hundred or so miles in most places we frequent. What we didn't expect was that, for US, the PM was easier to drive, handled better, and was rommier and more comfortable than all the others.
Again, YMMV
In our driveway sits a Chevy AWD and a Ram FWD and for us, it has been the right choice.