Same here, NGK is the go to plug. There are lots of knockoffs, so if buying from EBay, I buy the NOS ones that come in Honda or Yamaha boxes. Probably safe to assume that the folks at Itsaknockoff don’t bother putting individual plugs in old dusty Honda branded boxes.
The NGK site has a link that shows how to identify some of the fakes, although they are always evolving.
Oil filters are also a big issue.
Ps. NGK factory in France. I always try and source Japanese manufacture although not sure if it really matters.