As OP stated ... DO NOT GET A SPIGEN CASE FOR YOUR NOTE 4.
I bought one as well before my phone arrived and thought nothing of it after putting on the case on my phone. Then a few days later, on Amazon and other forums, I read about the Spigen scratches and removed my case only to see the top and bottom scratched. I wasn't too thrilled about it but not much I can do about it now. I always keep my phones in a case so it's only visible when it's removed. Make no mistake it's clearly visible. My co-worker thought I did something to my phone when I held it without a case and didn't even mention to him about the scratch. It's just clearly visible naked. I keep my phones for about 2 years so it can be attributed to normal wear and tear when I sell the phone.
I did return the Spigen case to Amazon and got a Incipio case instead. Below is a photo of the top and bottom of my phone currently so you can see some of the scratches.
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