Grinder Update [$700]

Greetings!

Looking to upgrade my setup and figured I should aim for a new grinder first and then upgrade to a better machine from my Breville Barista Express.

I was looking at the Niche Zero and the DF64 Gen II (but I'm open to other suggestions as well).

Which grinders would you suggest in a price range up to ~$700?

Thanks in advance!