Earphone for 70s/80s Rock/Metal close to 50€

Hello,

I'm an avid old school metal listener. I listen to Scorpions, Iron Maiden, Metallica, Death, Megadeth, Thin Lizzy and stuff like that. All from the original Vinyl or CD, no loud remasters allowed. I'm looking for an IEM or earbud that has detail that allows me to listen to the drum membrane instead of just a shallow bang. Bass that doesn't eclipse everything or make the sound muddy but that is satisfying and is there when it should be there. Treble that doesn't pierce my ears for long listening sessions. A sound stage that isn't very narrow. Currently I'm using the AKG Samsung IEMs and they sound fine but not very detailed. I also like the LeEco CDLA earbuds, the shape is great. My earhole radius is small so I have fit issues with huge nozzles. For earbuds I'm looking for a shape that goes into the ear like the LeEco or Apple ones. I can justify going a bit above 50 if the VFM ratio is great. Other IEMs I have tried: Salnotes Zero, they were very fatiguing, no bass, only treble, perhaps the fit was bad. Moondrop Chu, they were alright, nothing special, I had to change the eartips to get them to fit.