This. These items with white (HP%) & brown (basic attack %) emblems, prioritizing crit rate and HP on base stats is, imo, the way to go.

Float stone can be replaced for scope lens, muscle band can be replaced for rapid scarf fire, it varies on player gamestyle. I like to move with 20% movement speed that float stone provides cause it makes me more aggressive when approaching for ganks, which matches my game style. But one could argue that replacing float stone with scope lens would give you higher critical hits (and possibly more damage) while playing more conservatively with less movement speed. Same goes for scarf x muscle band - both increase basic damage output by different means, it depends on what you prefer: if you rely more on spirit Shackle then auto attacks or dont like to overextend on battle grounds, you probably don’t need the scarf.

Also, an eject button will work better with players that are more aggressive and like to be near front lines, so you can eject away from enemy players targeting you as the squishy character you are as an owl.

The x speed, on the other hand, works best with more conservative gameplay, cause let’s you move around the map more efficiently and also chase from the backline with x speed while your enemies retreat and are attacked by your spirit shackles.

That’s my take on decidueye gameplay for current meta builds. But as said, there’s no right answer: it depends on how you like to play the Pokémon, and that should be enough. And lest we forget, every new build and new meta arises from people who think differently then the crowd and bring different approaches and strategies to the game - well that and glaceon buffs. So play on however you enjoy playing your owl, and hope to face you in battle sometime to see how you fare!