I have had such a hard time deciding on cases. I love the Ringke Onyx I have on my S23U, but didn't like the color options offered for the S24U. There are others I like and have used in the past that also had disappointing color options for the new phone, which knocked them out of consideration (silly, I know). Others I'd consider just haven't gotten their S24 cases ready to order yet (iFace and Peak Design), So I struggled with the remaining options.
I wanted to try a magnetic case - planning to use it with a wallet occasionally, and also with a magnet mount in my 5th wheel when camping (very limited space around the bed, and afraid of knocking my phone off the tiny little shelf at night). I know there may be interference with the s-pen while using accessories, but I won't be doing that often. I'm hoping the case itself won't be a problem, and bonus if my regular wireless chargers work with it. This is where I would have gotten the Peak Design (Pitaka not rugged enough, don't like the Mous case colors, Magbak ugly and slippery). I decided on the Casekoo for now. Was a toss up between this one and the nearly identical Torras.
Also wanted a basic non-magnetic case for just around the house and use with wireless chargers. I would have gotten another Ringke Onyx, but with that not an option I looked at the Caseology Parallax, Spigen Liquid Air, Torras Shockproof and Caseology Nano Pop. Picked the Nano Pop just because of the colors, other options were probably better protection wise.