This is too hard a question to give a simple answer to. I don't like regular PA28s, although the PA28R is acceptable.
Best trainer - C152 takes abuse well, is honest and capable. If the student or instructor ate a couple of pies, then the C172 is fine.
Love the Decathlon, and for real tailwheel I love the Pitts family. The Chipmunk has one of the nicest harmonisation of flying controls.
For "real" flying you can't beat a proper Cub.
For general all purpose filling your boots, can't beat a tailwheel RV; pretty much tick all the major boxes.
For multi-engine I guess my favourite based on limited experience is the Duchess, but I only have a few twin types to choose from.