The wife and I both just got this phone yesterday. So far, we like it. I hated the "soft" touch buttons on the Galaxy S5 and S6/S6 Edge. This one gives you hard buttons on the front. The whole phone just feels solid. I hope the Active lineup continues. Here's a pretty decent review I came across.
http://www.tomsguide.com/us/samsung-galaxy-s6-active,review-2910.html
http://www.tomsguide.com/us/samsung-galaxy-s6-active,review-2910.html