Cessna every time for me.
Two doors, better view of the ground for passengers, cockpit doesn't get wet when entering in the rain, no grovelling in the mud when checking the fuel for water, better flaps, particularly the older models with the 40 degree setting.
Drawbacks? Restricted view when turning - lean forward. Gymnastics or ladder required to check the tanks and filler caps.
I have to say I find Cessnas much easier to land than Pipers.