I ultimately love the quality build and performance. Can't wait for the next launch and can't wait for the S8 (That's the next phone I'm planning on getting.
While I love the design and look of the Samsung Galaxy S6, I dislike that it got rid of some of the features of the Galaxy S5. Settings in the S5 allowed me to get notifications when someone was calling. That feature didn't come with the Galaxy S6. If it is there, I can't find it. Setting the alarm is a pain. Every time you make a change, it saves it as a new alarm. With my old galaxy, I would wake up to the name I gave the alarm - i.e., "Morning, it's time to get up!" No such thing with the S6. Most morning, I don't even hear the alarm go off and it's next to my bed even with the loudest volume settings.
I would rather it look good and provide for my needs. For me, this product just doesn't do it.