Best Editing Laptop for Premiere CC19?

I am a freelance editor and work on the go a lot so I need a laptop that can handle Premiere Pro. I need to use it professionally when work doesn't supply an editing computer for me, it's only online content so no 4k.

I heard the HP Zbook is good but it's almost $5k, the Dell xps 15 seemed ok too. With CC 19 just coming out, it would be good to look for something that can run it. My budget is $3700 AUD max.