Partner has the z flip4 and is very happy with it.
Although the folding mechanism on the first one seized up. When it was forced open, the pixels on the crease turned off.
Took it back to the retailer and they swapped it on the spot. They were out of 256GB versions, so they provided the 512GB one instead. As the price of them had dropped a lot since purchase, the store gave $250 cash back for the difference.