Tom Warren at The Verge:
The Lumia 950 XL simply isn’t for me or the vast majority of smartphone users out there. I use Windows 10 on a daily basis on a PC, but the experience on mobile is just lacking. Microsoft has done an excellent job on its apps for other platforms, and my iPhone home screen is full of them. The Lumia 950 XL needed something exciting and unique to convince me to switch back, but it failed.
I’m expecting to confirm this, but every review out there has pointed more or less to the inmature state of these new smartphones. It’s Microsoft fault, but it’s a logic flaw: Windows 10 Mobile is a baby OS. I’d like to give it a chance, but I’m affraid the market won’t be so merciful.