...I likes em both. The 172 and PA28 are almost too similar. The C152 is my second favourite only to a Super Cub. For just because here are the differences and quirks to enjoy in a PA18 from what I remember...
1. getting in is a challenge;
2. stick vs yoke;
3. odd engine start button depressed by left hand whilst holding the stick in the right elbow and throttle in right hand!!;
4. throttle on the window sill;
5. carb heat in the left panel;
6. heel brakes with locking finger ring pulls (not the technical name for them but it will do, also not sure if all PA18s have heel brakes)
7. a tailwheel
The thought of the Cub still makes me smile and chuckle about these