D.H.
ok, just to be the opposite, go with the Acadia........actually, let's look at the things you talked about.....
The seats are easier to move in the Acadia.....how often are you going to move them? How big of a difference is the gas mileage? What benefits do you get from getting a new car versus a used one? Like warranties?
Get a piece of paper, put a line down the middle of it long ways, on one side put Pro's and the other side, put Con's.........do this for each car......what is the good points, what is the bad points........look at what is best for the family, not necessarily what is fun to drive, although I do think that is important................after you do the pro's and con's......get on the internet and look at the ratings and reviews of each car.....
After than pick...............if you are still confused, draw straws!!
Good Luck and congrats on baby #3.......take care.