Has anybody tried the Blueberry Mini Deluxes for newborns? I'm leaning toward these since we really like our OS Blueberry Deluxes, but it looks like a lot of people really like the Newborn Simplexes. I love the idea of the snap down for the umbilical cord on the Simplexes, but when we used to use the OS Simplexes with DS, it seems like he got diaper rash more often since there isn't a stay dry interior. Has anybody else had this issue? I'm obviously hoping to avoid diaper rash with a newborn as much as possible. TIA!