I've been an extremely loyal WinPhone user since WP7 and my Samsung Focus. I've used a Lumia 920, 925, and most recently 950, and can say that I just jumped ship a week ago to a Note 7 and I'm not looking back. I'm so much happier with the Note.
I've been so loyal to the platform, stuck by it, defended it, and went without apps because the phone worked better, but as soon as I got that email from Amazon saying they were dropping support, I was done with the platform. I use Amazon a lot, so if I can't even do that, then what good is it to me? I can honestly say that I am so much happier since getting rid of my WinPhone. While I like metro on the phone, I don't even care at this point. I'm just happy that I can actually subscribe to my car alarm and use their app, I can actually use Google apps to talk with friends all day, I can actually use Kakaotalk without it crashing after every message, and I can finally play Pokemon Go!
OP, take things into consideration of what you use your phone for. The grass may not always be greener on the other side, but for me it was a lush tropical paradise with hula dancers and all the gin & tonics in the world waiting for me.