Like yourself mate i was in this situation 6+months ago! After years and years of iphones and an insane amount of them breaking on me and there stupid software upgrades i decided to make the jump to the S7 edge on release date ....... The best thing i ever did!
I will happily say il never own an iphone again the samsung is world above apple when it comes to phones HOWEVER ...........
Theres is only one downside to the samsung S7 the gorilla glass isnt all that strong, my wife and sister in-law are both on their second screens! one cracked when being lightly dropped in a handbag and the other was cracked when sitting down with skinny jeans on!
But saying that mine has held together ok and im not exactly the nicest to my phones but it does put you on edge about the screen
Go for the change man, will be worth it!!!
James