So on my 17 pro max, I've been using a lonli edition blue case the last few days. At 40g I thought it was a little heavy and bulky, but otherwise very comfy: The leather feels great in the hand, the buttons are fantastic, though there is a little play in the camera button, and the plateau edge is covered in leather and sits great on a table without sliding around.
That said, it was expensive, and I had the opportunity to get a belemay leather case very cheap. It feels shinier, the plastic plateau trim just barely goes past the cameras so it offers minimal protection (but it does offer protection!), and because the plateau trim is plastic, the phone effortlessly slides around the table. The buttons are terrible, and the power button had zero feel at all when I first used it....
Then I tried to take the dang thing off. I had to use some plastic coupon cards I had laying around because THAT STUBBORN THING JUST DID NOT WANT TO COME OFF!! ARGH! It makes me never ever want to use a case on my phone ever again. Ever!