Congrats on your new family member!
We have an 8 month old and just replaced our '02 Mazda Protege with a 2011 Rav4. We also have one of those big strollers. The strollers are great for pushing the baby around, especially in parks where the path might not be paved etc but they definitely take up a lot of trunk room.
Having said that... we probably would bought a sedan or hatchback if we didn't also have a dog. The stroller fit fine in our Protege's trunk with room for the baby's bag, and a few bags of groceries, but not much else.
Of course the extra room in the Rav4 is definitely nice... especially if we decide to have another child.
So I guess I'm saying the sedan will likely do fine (they are called family sedans for a reason after all

, but you might really appreciate the extra room of the Murano... and the extra cost?
