What’s your all-time favorite IEM and why?

I’m looking to start a fun discussion about iem and hear from you allover the years, there have been so many great IEMs released, from budget friendly options to high end audiophile gems. I’m curious which IEM do you consider your all-time favorite and why? Is it the sound signature, comfort, build quality, or maybe a combination of everything? Does it suit a particular genre you love, or is it versatile across all types? I’d love for you to share your experiences, what you used before, and what made you stick with your current favorite. If you know of any underrated gems that don’t get enough attention, definitely include those too. Can’t wait to see what everyone recommends—I’m always excited to discover something new or understand why certain IEMs are so beloved by the community!