In Youtuber’s hand-folding test (live stream), the Razr Plus broke after 126,364 folds (hinge gave up after ~44k folds) while the Z Flip survived 273,316 folds (but lost ability to stay fully open after 223,000 folds) and is still going right now in the live stream.
EDIT: the Z Flip is now at 275,203 277,350 298,500 300k folds!
I absolutely love the flip. Much more comfortable in my pocket. And I like the student angles you can have it in for photography, watching videos, or reading.