Webley & Scott 400 Series verses 700 Series Shotgun

I was recently viewing the attached YouTube video from TGS Outdoors, re: The Webley & Scott 700 series shotgun.

Webley & Scott 700 Series Shotgun

My question to the British shotgun experts, is the newer Webley & Scott 700 series shotgun superior to their older 400 series shotgun? From what I can see, the 400 series model had the disc-set strikers and the screw-grip rib extension third fastener over the post-1946 700 series model.

Example of the Webley & Scott 400 Series Shotgun

Any opinions on model preference?

Thanks in advance.