I made this swap.. well.. kind of.. I had planned to but I have my wife by 6P because of her frustrations with her G6...
I want to say that I loved my 6P. It was smooth, reliable, got good battery life, too great pictures, etc. It did everything I asked of it and it did it really well.
Now, I've had the 2XL for a week and I have up say... You know that song from Annie Get Your Gun... The line 'I can do anything better than you!'. Well, that's the 2 XL. It's just a stellar device.
Now, in most cases it's not a huge difference (short one I'll get to shortly). It's a little faster, a little more responsive, a little more functional. The camera quality difference is closer than one would expect .. though the 6P can still hold it's own against anything it there still. But the camera is a lot quicker. It launches faster, can take pictures quicker, focuses quicker and processes HDR+ much quicker. And video, due to the supernatural stabilization, is much better.
Basically I can take this thing out of my pocket, open the camera app in an instant, take a quick shot and get an incredible picture without even bothering to worry. And we haven't even seen what the new Visual Core will bring us.
Oh, and it has that trick portrait mode that's actually a lot more useful that I expected
The one shocking improvement I've seen is with battery performance. Now, if you look at the metrics from my 6P, with my usage, it would yield about 4 hours of screen time with 24h between full charges. Granted, I'm a charge early/charge often so I rarely would do that. But a week into the 2 XL... My usage is pretty similar still, but those same metrics show 6.5 hours of screen time over 30+ hours. The 2 XL uses significantly less power when in use. My 6P was usually in the 18% to 20% range, on average. The 2XL is about 10-11% per hour. Holy schnikies.
That's putting me in "Pruit Igoe playing in the background” awe. It is, by a wide margin, the most power efficient phone I've used and one that, at least for me, could hit that magical two-day charge plateau... If I put it down.