At first glance it looks much like previous galaxy models. Performance is much faster. Camera much faster reacting. Some of the typical home features have changed. Getting a custumed to them is a challenge. Some new features are welcomed. Health monitor for example. And grouping of similar apps. Not in love with it yet. But happy and enjoying it.
My Samsung Galaxy S6 is awesome. It's simple to use and very fast. I love the new functions. I upgraded from a Samsung Galaxy S4 and it was an easy transition. I love the bright and easy to read screen and the increased size. I find that friends are asking about my phone and I enjoy showing them the wide range of options it provides me. I definitely recommend it to everyone.
The build quality and specs are superior to any other phone, as is the overall performance. However the glass body is so slippery combined with the size of it makes it practically impossible to use one handed. Texting one handed is out of the question.