Have not tried CAT8. Must give it a try when I get a chance.
Although the 30m limit might be a restriction in my case but will have to check.
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Replaced all Cat5s with SFTP Cat8 and yes, there is a difference. More stable and clean image. Those sitting on the fence for audiophile-grade switches can start with this instead. Note that in-wall wiring in my home is still some old cat5, but it proves that last legs do matter.
I bought this-cable, especially because it is made of solid-core copper.