This weekend we went and tested out some convertible carseats. It's down to the Diono Radian and a Britax. The Diono is my preference, but it doesn't fit super well in our car. We can make it work, but it's a little long. The Britax fits better, but it's quite a bit wider and the sides are taller... making it a little harder to get LO in. We're thinking that we'll get a Roundabout or Marathon for now. Once we get a bigger car and #2 gets ready for the convertible, we'll probably move LO into a Diono and let LO have the Britax. Is that reasonable or is it better to go ahead and make the Diono work now?