I will say it's fast.
My complaint is the Thunderbolt 3. It is a lie. First you need an adapter because of course you do and the only one at the store is Apple's. I have a bunch of Macs and displays and peripherals and zero success talking to any of them.
I don't know if I'll even complain. I have an Intel desktop mobo that after several years learned to drive a display over Thunderbolt iff it's connected on boot and that's all. So I'm not expecting much.
The trackpad is terrible!! You can't click it if you're holding the laptop because the chassis flexes too much!
The keyboard is fantastic though! It's just like my MacBook Air's keyboard! Just the right amount of travel and give. I'll give them props for that.
I always take a next-business-day-on-site warranty and until now it was a pretty useless "investment" for the XPS13.
With a previous XPS I had to call them once. After navigating an endless series of phone menus, the support I got was as good as it should be.
For a $2,100 AUD laptop it's a joke. Their quality control is non existent.