So that's around what...5 days with my S7 now and I have to say I'm delighted with it.
+Screen - After being away from the S6 Edge for a while and coming back to the S7 now I just appreciate how good that screen is now, the deep blacks, the popping colours, fantastic.
+Build - Just the improvements I would have wanted, again feels premium in the hand the extra weight is actually pretty good. Ergonomically the device feels a lot better in the hand with the curvature on the rear, even with a case on.
+Camera - Sony Sensor here and everything seems to perform great, no fuss, instant focus image taking, perfect.
+UI - I actually can't say too much about Touchwiz other than the menu options but definitely an improvement, Material Theme on and then UI has been taken over by Nova Launcher.
+Performance - Dare I say night and day from an S6 Edge? Everything is soooooo fluid and quick now it's amazing, much improved and I just can't find fault with this phone.
+Battery - Enough of an addition to remove the headache of the previous generation as the S6 Edge was a nightmare when it came to battery life. The S7 easily sees out a day which is the minimum of what I want from a phone and I can't see myself having to 'top up' from time to time.
This is the most satisfied I've been with a phone for god know's how long and I think it truly stands a chance of actually surviving a full year with me.