I wish I had one of the Sammy cases as well..mainly because I always like to have at least one cover/case from the phone manufacturer as the fit is almost always the best and the port openings the most dependable.
That said, nothing has felt as secure in the hand as the Note 4 Verus Thor for me. Most of my drop incidents are directly out of the hand. So that sort of security plus protection is important to me. I think the combination of the hourglass shape plus the way the texturing wraps around the sides has a good deal to do with how secure it feels in the hand. The extra TPU material at the corners as much as anything accounts for its ample drop protection without being overtly thick or bulky.
In my experience, the downside of the hourglass shape is that it will not fit in mobile phone holders that require slide in/slide out as easily as a case that is uni-dimensional, like the Sammy. I have a slide in/slide out that works with my hourglass shaped Thor. However as I said, it might take a little work to get a vehicle phone holder that works for you.
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