Someone mentioned that the Bucker Jungmann was the only airplane that lived up to the hype. I can confirm that's true. Beautifully balanced, light on the controls, responsive, yet not twitchy and no bad habits. However my RV-8 is all that, plus it's twice as fast and has a heater. I sold the Bucker and kept the RV-8.
Honorable mention goes to the Cessna 170B. Also well balanced and light on the controls, with no bad habits. Not super responsive, but in a respectable 4 seat family plane that was fine. Cessna 150 is also a very nice flying airplane, along with the 140. I suspect most of those early Cessnas fly nicely. Unfortunately not so with the later ones. My Cardinal RG flies like a truck. Caravan wasn't any better.
Worst airplane I ever flew was the Aeronca Chief. No control feel other than heavy drag in the system, sloppy and slow response, and didn't have enough power to get out of it's own way.