Classic Marathon, don't like the newer ones so much, though, but that classic is still such an easy install in so many vehicles. Granted, there are better options for longer rear facing, but for an averaged sized kiddo, it's still pretty good.
I now have a Radian R120 and I found a new love. I expected a booger of an install b/c the sunshine Kids Radian was a booger in my '99 Civic with forward of the bight belts. My '08 Nissan Versa has slightly forward of the bight belts, too, but it installed beautifully in it. I did twist the buckle stalk once, but that's it. Easy install, just barely enough room next to it for my son's Frontier 85.