I also narrowed down my CUV to these two models. I guess they are competing head to head out there!
I immediately fell in love with both when I drove them, but in the end picked up the 08 GT CX-9 loaded. I also realized I was approaching MDX price territory and made that VERY clear to my Mazda sales person while we were negotiating.
The Acura is probably more refined overall, but smaller, and 3rd row seat is not as accessible, nor is that area as big. Also the Acura is noticeably "quicker" when you drive it, certainly quicker off a start.
However that front grill! Oh my...what a waste...I know looks are subjective, but imo they got inspired by the Transformers movie coming out and decided to Megatron that thing! What were they thinking!?
Anyway, VERY close call for me at least...really really liked both.
One reason I went with Mazda also was because I like to "build" my cars to my needs. For instance, I wanted power lift gate on the Acura, but I had to buy the entertainment package to get it! Unless you get your jollies watching that door go up and down automatically, I have no idea why it was included in this package. Should be part of tech, imo.
Both great vehicles though, for sure. If I just had one kid, probably would have gone the other way.