I've got a 03 Chevy 3500 and it's been a good van for me though I can't compare it to a Ford or Dodge van. I did drive a Ford 150 pickup when my Maxima was in the shop for a couple days and I must admit, I was pretty impressed with the build quality, comfort and ride of the Ford pickup.. I know its apples and organges comparison but I think it gave me some insight into how the Ford Vans might compare.
Like Doc said, my Chevy drivers door armrest and back cargo door handles have both broken. I can still use them but the expense to fix them is rediculous through the dealer. My headliner is coming apart at the front windshield lip and my mirror just fell off the windshield too. Not that I use it much. Don't know if that will be an inspection issue yet next month or not.
Brakes and held up well, but not the brake lines.. Maine winters and the soduim chloride or whatever the crap is they use here eats through brake lines on all Chevy trucks because of where they locate them and the brackets they use.. They get sand and dirt stuck between them and vibrate either because of poor quality, design flaw or whatever. It's an expensive repair. This may not be an issue for you.
I'd give Ford a good look when I'm ready to buy a new van. I'm not a staunch Chevy til I die kind of guy. Ford do seem to rust a lot quicker than other makes though.