Well first off you can't beat sitting in the middle with a stick and the visibility for the pilot of a Champ or Citabria is probably among the best out there for a high wing.
The Maule is a decent airplane but, like the Citabria, it's not a sophisticated airplane and has gobs of adverse yaw that is offset somewhat by a rudder servo tab inter-connect. It's a heavier airplane and flys more like a pick-up truck, which is somewhat analogous to it's design purpose. You just can't throw it around like a Citabria or - to be closer in mission intent, a Scout. With two people in front there's not much spare elbow room and the co-pilot has to keep his legs and feet in a specific position to avoid conflict with the yoke and pedals.
I've spent plenty of x-country hours in an M7, coast to coast, Oshkosh, Alaska and back, hung out with the Maule enthusiasts at back-country strips in Idaho and Montana and did my seaplane training in a Maule. It's a capable airplane that can haul two guys and just about anything they'd want to bring along with them to just about anywhere.
But a Champ, Citabria or Cub is still just more fun to fly.