I dislike the current emphasis on hard seats (and this applies to most other brands as well- Toyotas and Hondas are the worst). Enthusiast magazines can rave all they want about great support, etc, but the softer seats in friend's '92 Caravan are more comfortable than these in my 2013.
I have an SXT model, which is sort of mid level in Grand Caravans, and it does have a power seat. However, that is an OPTION, and it should be standard above the SE model.
see full Dodge Grand Caravan review
What Our Members Are Saying about the Seat Room and Comfort of the 2014 Mazda Mazda5
The front seat head rests are horrific. They jut out and force your head, neck and entire upper back into an uncomfortable position. I'm sure this is part of some ill-conceived anti-whiplast design, but it's awful. I'd rather risk some whiplash than drive every day with this!
see full Mazda Mazda5 review