I don't think I should try the Yinyoo V2 based on several reviews. The earphone was released in a time shortly after the RevoNext QT2 and a handful models from BQEYZ; whereafter many reviews pointed out they all sound quite similar. I decided to stop testing that bunch of earphones and concentrate on wireless instead.

I do have the Yersen in my collection, and while it sounds amazing when it comes to spaciousness and instrument placement, it also sounds way too piercing for a lot of people. What's more, is that there are quite a few complaints from people saying their FEN-2000 died quite fast. Therefore, I don't recommend it.

The Tennmak Pro doesn't give me an 'euphoric' feeling. I think I've tried too many earphones for that. As for your other requests; in both categories I haven't tried models I like enough to recommend.