I currently fly both a Super Cub and a Super Decathlon.
Cub is agricultural and docile but a fantastic STOL machine, Decathlon is an Aerobatic trainer, far more responsive and quite a bit more slippery compared to the Cub with a wobbly prop to play with and I suggest would be a good mid point stepping stone from the Cub to something like a Pitts.
I find speed control is far more critical in the Decathlon especially given the lack of flaps, 5mph too fast and it wont slow down easily, 5mph too slow and it drops like a stone. Lovely machine to aero, just leave it at 25/25 and its perfectly happy.
Cant think of any real vices other than the speed control......
Regards
UA