[noggin]

For me, I don't want a hacky duel boot thing. I have multiple clients, for non-techie family that can watch tv, netflix and media all from kodi, so it needs to be easy and all in once place, hence kodi with plugins.

So for me it's a case of the best boot to kodi box, which can play netflix 4k from inside the plugin. Anyone able to confirm this on a device they have?

I don't think you will get nextflix 4k playing via a kodi plugin.

I had nextflix running on my X96 max with CE. it was so out of sync it was unwatchable. CE uses the same plugins as Kodi, because CE is a cut down linux version of Kodi.

No, that is different. I don't expect CE to be able to play Netflix 4K via plugin (prob ever). LibreELEC (pretty much CE) plays Netflix great in 720p, really good actually. But like CE has no road to 4K Netflix as it's limited to software decoding. I thimk if you has a PI running LE and not a X96 running CE, your Netflix would probably be loads better. The difference is the Android based (Netflix certified) devices running Kodi "should/might" be able to access the L1 hardware coding Widevine and therefore able to play the Netflix 4K DRM content from within the plugin. Just need someone with one of the above devices to be able to test and confirm with feedback?

Widevine Level 1 alone isn't a route to 4K Netflix I'm afraid.  Netflix also need to whitelist your device to enable 4K streams, which requires a dialogue between the manufacturer and Netflix.  So far only a small number of manufacturers (Apple, Amazon, nVidia, Google, plus Smart TV manufacturers, and a few others) have managed to do this.  A few Chinese boxes have tried to circumvent this by cloning elements from approved devices - but there aren't that many routes to official 4K Netflix.  Some other 4K providers have less restrictive requirements I believe.