I just upgraded from a Galaxy S5 to my S6 and I am in love!! Beautiful phone, super bright display, and very thin. It also has upgraded security features which makes me feel secure. It is super light weight and just looks high class.
The S6 has a great battery that lasts much longer than my former S3 and takes less than two hours to recharge. I like the look and the sleek feel. The apps are easy to use and the software is very user friendly. My only regret is that I purchased the S6 just few months before the S7 arrived!