I own the Zoom B2 Four (in a box somewhere) and I’ve owned the Line 6 HX Stomp and I currently use the Line 6 HX One.
I think that the POD is going to use the Line 6 technology that you find in the Helix systems. If that’s the case then it’s going to sound a little bit better than the Zoom.
The Zoom is fine but the Line 6 stuff is really good.
I’ve not played through the new Line 6 POD. What you don’t get though is a built in drum machine.
But you can get those free as an app on your phone if you wish.
Neither are bad choices, I think the POD sounds a little better to my ear and easier menu on the POD to experiment with chorus, delay etc.