This my fourth Otter Box case for my fourth Samsung Galaxy S# phone (I got the Defender for my Galaxy S and Commuters for my S4 and then S5). It's a match made in heaven. I really like the purple and black that I chose. The other times, I just got all black. I love the selection of colors. It fits the phone perfectly, of course. The buttons are still easy to push and I like the little tabs that keep the earphone jack and charging port safe. This phone case was really well designed and it totally complements the phone design (ie infinity screen).
I had the commuter for my old phone and got it again for my new phone. It's my favorite otterbox because it's not bulky and stands the test of time. I had my last phone for over 3 years and either me or my toddler dropped it daily.
This is my third (or fifth if you count my wife's) OtterBox and at this point am reluctant to try anything else. I have dropped my phone many times, once when it cracked the OtterBox, but the phone was unharmed. This is my go to brand for any new phone in the family.