I've got both the 7Edge and the Pixel XL. Got the 7Edge after having returned the N7. I'm actually sticking with the Pixel. It really does "just work" and never stutters. I do think I'm actually getting much better battery life out of the Pixel than I am on the 7Edge (and that's comparing my Edge before the bug hit it).
And regarding the Edge panels, although a nice feature, definitely tend to create lag on the phone... especially the more of them you use. And things do really launch and respond faster on the Pixel. My other issue with the Edge panels, and I know this may start a flame war over the topic of bezels, but it got annoying trying to hold the Edge without unintentionally touching something or clicking on something.
I wouldn't have tried the Pixel if not for the Wi-Fi bug on the latest security update that messed up my 7Edge and created crazy battery drain and overheating. Had I found out the cause was the Wi-Fi scanning (and yes, I did search but couldn't find the answer) before I got the Pixel XL, I probably wouldn't have bought it, but I'm glad I did.
The one thing that I do miss a whole lot from my Sammy is the wireless charging. I do love that and was surprised Google didn't put it in the Pixel. I'm not saying that I wouldn't go back to a Sammy device...I did love the N7 and if a N8 comes out, I'll likely get it (love the S-Pen), but the ease of use and fluidity of system response on the Pixel is just undeniable.
If you're going to get the Pixel/XL just manage your expectations about not having some of the Sammy features like the edge panels and making sure you can do without them. I've found nothing else outside of the lack of wireless charging, that was a problem for me.
Because of Nougat, I have the split screen with apps like I have on the 7Edge, albeit the 7Edge has a few extra options in that area, I.e. the pop-up windows; but the Pixel method is just fine. In terms of the camera, Sammy's cameras have always been excellent. I think the cameras are about equal in my eye, but supposedly the Pixel XL is better. And the back finger print scanner (and notification shade pull down) are great