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No, the Apple Watch is basically best of breed in terms of sleep and heart rate accuracy.

The Whoop is like 90% accurate compared to it: https://www.youtube.com/watch?v=9SzUDTBK-i0

It's just trade-offs: if you're using the Whoop, you don't want a screen and you like two weeks battery life.

There’s a study that pitted different devices against each other. The whoop was more accurate. At least a few years ago it was

Is it? Across what metric?

Not really. Also if I’m going to wear something on my wrist all day I want it to do more than just record some stats.

i wear both.

And most likely still junk