Magaosi X3 IEM

for the 150 dollars price range what would you currently buy? I'm looking for my first pair of IEMs!

Yes! That's very true, they were for stage monitoring, so I desperately wish that we could stop calling all in-ear headphones "IEMs". Just call them in-ear headphones, they're not built for monitoring. If you have to abbreviate it, call them IEHs or IEHPs.

I own a pair of these (not purchased through massdrop). Really like them. Compared to other ba earphones I own, they have the most honest treble response. They aren't artificially bright. Cymbals sound like cymbals really sound, not cymbals mic'ed an inch from where you strike it. As a result, the soundstage isn't enormous, but it's still really good. The texture of the bass is great. I find myself grabbing these more often than my other IEMs (IMR R1, Hifi Boy OS3, TFZ Secret Garden), partly because they fit well and isolate very well, but mostly because the sound signature works for me.