I've been using the Samsung zflip 3 since release without issues. I like that it does not take up much pocket space. I've always liked smaller phones like the Xperia Xz1 compact, so the unfolded screen is a bit bigger than I'd like. Sadly there are not many options for small android phones anymore.
I've pre-ordered the zflip6 through att since they are offering a $1100 trade in value for the 3. Looks like it'll have a bit better battery, camera, and a dust protection rating.