I switched to an iPhone 5s two months ago and I haven't regretted it since.
I had the Lumias 820, 1020, Ativ S, 1520 and 830, and briefly the Lumia 950 XL. I loved Windows Phone 8.0 and 8.1. but I hate Windows 10 Mobile (and its terrible state) with a passion. Then along came the truly horrible...