Video Editing: Dell XPS 15 / Precision 5000 Series / OR (APPARENTLY) A GAMING LAPTOP?!

Hello! and Help!

My MacBook Pro has finally died, and I am leaving Apple for good. I've spent the past week trying desperately to understand all of the options within options of PC laptops. My situation is this: I edit video and I want a powerful machine; I want smooth editing and professional finished products. 

XPS and Precision are very similar and I am wondering if there is any benefit to shelling out for the Precision. After poking around on this website, I'm also newly concerned about a flickering screen issue that the XPS models seem to have. But I'm in love with them; they're beautiful.

Visiting Best Buy today, I was sure I had myself narrowed down to those two Dell computers. Then an employee suggested I consider an MSI Gaming Laptop (GS63VR STEALTH-252) on account of its GeForce GTX 1060 GPU (6GB), against the XPS' Nvidia GeForce GTX 960 (2GB).

The Stealth's hardware is pretty awful, and I don't think I'd be able to get past it, but it's troubling to know that there are options other than the XPS or Precision with more supportive GPUs. 

So: 
Any word on the Precision vs. the XPS 15'?
Is the screen flickering issue something to be worried about?
Are there other laptop options that will handle video better?