If you pay retail for an unlocked, no carrier bloatware phone and you tend to drop things, you definitely want to protect your investment. The Otterbox Defender not perfect, but it is very good choice. Having had a Defender on my S5 for several years, it was my first choice to protect my S7 Edge. The Defender affords protection for the phone body as well as the screen (no separate screen protector needed), and it fits very well. Importantly, it is designed to nicely accommodate the curved screen on the S7 Edge.. As to performance, I have already dropped the phone several times on hard surfaces, and it has worked like a charm.
I saw someone posted that you have to remove the phone from the clip to access the charging port; however, nearly all of my charging is done in the clip. No access issue at all.
On the downside: It is bulky when in the carrying case, but the trade off is the level of protection. Though the belt clip on the case appears to be just like the one on my S5 case, I find that this one tends to come loose more when bumped, which has caused some of my phone drops. On one of these occasions, the phone took a double hit; however, to the case's credit, the phone apparently was not hurt. Lastly, accessing buttons on the edge of the Edge screen is a bit of a challenge on occasion.
Bottom line: In spite of the downside items, I would buy the Defender again, and I would surely recommend it to a friend. Were it possible to do so, I would have rated it a 4.5.