The best IEM $300 and below?

Tanchjim Oxygen, Sony EX800st, or Dunu DK-2001.

What is about the FiiO FH5?

Would the Drop/JVCs be a good choice for classical music? Seems to be the case given their relative neutrality.

Any good IEM s to listen to at work … I listen to all kind of music.
Wireless would be fine.
I thought of this :point_down: one.
Any other recommendations ?
I am nt sure how these fit in ears … Bit skeptical…