Re: Played with the 950XL today, Wow!
Spent some time at my local Microsoft store the other day and I was seriously impressed with the 950 and especially the 950 XL. I've never been a big fan of phablets, always thought they looked a little stupid, but I fell in love with that glorious display.
The phone was definitely light, which while it doesn't feel "premium" it's better than being a brick, IMO. They both ran amazingly smooth, even with lots of apps in the background (the task switcher on the XL looks SO amazing), and I was blown away with how fast the camera launched, whether the phone was locked or in an app. My 925 takes up to 10 seconds, the 950XL was picture ready in about a second.
Tried taking the back off and found it to be pretty easy, but when it was on it felt secure and I didn't feel anything moving or flexing (unlike my 925's polycarbonate back, which isn't even removable but still flexes in one corner). Also thought it was neat that the buttons were on the removable case, I figured you had to get the back off around them, but they just make contact with plates on the phone itself, so third party backs will have their own buttons (could be good, could be bad).
Unfortunately I just got my 925 about 8 months ago, so I've got a ways to go before I can justify buying a new phone, so I'll be sticking out till either the rumored Intel phone or more likely the 960 series. But if I had the disposable income I'd definitely pick up a 950XL, I think it's a pretty solid flagship.