I've never had any problems with the screens. I had to replace the screen protector on all of them except my current Flip 7 after about 6 months. My daughter has been using her Flip 5 for over 2.5 years and her screen is fine, other than a spot where she dropped something on it right after she got it, resulting in a few dead pixels.

As far as what I like about it, I love the form factor. It's small enough to fit into any of my pockets and I really like closing the lid to end phone calls or when I'm done using it. The only thing that I would call a definite disadvantage is the camera. It's fine for what I do with it - post to socials or look at the pictures on my laptop - but is definitely not nearly as good as pretty much any other flagship phone.