Laptop by far, it’s not even close. There’s practically no advantage to a PC I’d be missing at all. I can quickly grab it and bring what I’m meddling with anywhere I go quickly, and the battery makes it so I can jump between my desk, couch, or down the street. If I need to run an external peripheral for some strange port, I have a Thunderbolt external PCIe enclosure at my desk.
That said, I wouldn’t consider a Chromebook a practical replacement. Not because it’s a laptop, but because a lot of what I fiddle with is just easier on a normal OS.