I have had Gori 3 blades. Beautiful design and excellent backing power but very subject to wear and tear on internal rubber sleeve and very expensive zincs. Now have Bruntons. Much less expensive maintenance
and easier to install zincs.
If you go with Gori, DO NOT use there "power" feature. Rapid shifting from reverse to forward can wreck your transmission
or dampening plate. One of my dampening plate failed after 400 hours and there was no other reason for it to happen.