When Elaine Kauh and I were shooting the Cub vs. Champ shoot-out video (scroll to the bottom of this page), it was the first time I'd ever flown these two vintage taildraggers back-to-back in any kind of organized way. I'd flown the Cub plenty and the Champ a little less often, but with months or years separating the stick time. But hop out of one and climb into the other and the differences between the two are quite noticeable; maybe even dramatic.
This is a companion discussion topic for the original entry at https://www.avweb.com/flight-safety/proficiency/cub-vs-champ-which-to-pick