I had a Z Flip4 for a couple of years and really liked it. I have had the Flip6 for a few weeks and love it. There was very little learning curve from a previous version to this one. I like the updated features (like the larger screen on back of the phone).
Got my Flip6 and am very happy with it. Had two Z-Folds before this but wanted something smaller and the Flip6 is perfect. Easily transfered old to new and was up and running in minimal time. smaller