How I chose my current gear:
I bought the M50X because of good reviews and ratings. The excessive treble was irritating, so I switched to my ~$10 IEM. I searched for a negative M50X review and found Zeos (Z Reviews). He earned my trust by not liking the treble. Because of him, I gradually bought the KSC75, DAC-X6, and HD 280 PRO. I bought the HD 280 PRO because he liked the PNC and sound. I got much better PNC with KSC75 inside 3M Pro-Grade Earmuffs.