Who I have the same questioned this topic

I was very excited to get my new S7 a full 2 days early and hurried up to transfer my # and all of my apps and files.  My old device is an S5.  I thought there would be a much more noticeable jump in looks and feel between the two, but the biggest difference is Marshmallow.  Side by side they are both in protective cases and they don't look much different.  The S7 does feel faster, but it's also new and on an optimized version of Android.  The S5 is supposed to get Marshmallow soon and I'm not sold on keeping my S7.  I'll bet that when they both have the same version of Android, there won't be that big of a difference.  At least not a $672 difference.