Not saying the OE plates don't work, because in most instances, if properly installed with the correct gaskets, they're fine. But that's the same thing with any part.

I have seen where they leak though, especially when re-used, re-tightened, etc. Leaks could also be from irregular surfaces on the block.

The one 'advantage' of the Canton plate is that it has more holes to allow more oil into and out of the filter. Necessary? Probably not but it's a good idea in theory.

Just a 'better mousetrap' I suppose, nothing real special about it. They're only like $42 though so why not?