Looking for an atmospheric and natural sound for $350

Hi, kinda of a newbie here. My current headphones are like about to die and I am looking for my first pair of iems. What I am thinking of is like an atmospheric with a lot and rich details that makes every song feel unique, a good soundstage with that airy felling, and a neutral and natural range that is approximate to the master of a song and it gets you easily into flow state. Also I make music, nothing professional but I wanna have something that I can use for my little projects.

Basically something that puts you in the zone and would be like a long-term purchase.

And also that are pretty comfortable since I usually listen to a lot of music for long sessions

Any recommendations will be really helpful, thanks!