I am definitely keeping the iPhone.
Yes, I still have a SIM in a Windows phone so I haven't completely abandoned it, but I'm probably going to give one of my Lumnia 950s to my husband.
The apps on the iPhone are easier to use, though there are a few I things I haven
And I'm using a Microsoft Bluetooth keyboard with my iPhone and with one button can switch it to the Windows phone.
I wrote this post as a email.
Sent from Outlook Mobile. Yes, it works with gmail.