I know it sounds weird, but I need to buy a carseat that's easier for my preschooler to unbuckle. With baby#3 on the way, I'm going to need to move my 5 yr old to the 3rd row. However, she'll need to be able to unbuckle herself from her car seat to get out at school/carpool. She's currently in a Britax Marathon and she simply cannot get out by herself. She's an AVID rule-follower, so I know for a fact that she will not unbuckle when she's not supposed to.
I've been looking at the Britax Frontier, but I don't know how hard those are to unbuckle. I would assume they might be as difficult as the marathon.