Curious as to what would be a better choice, Noble 8 or K10? Either would be universals. I'm definitely a basshead, I never considered the Heir to be basshead level, but there was something that I found to be magical about them, always felt emotion when I listened to them. I prefer more bass, but, I never wanted the sound signature to change on my Heir 8.a.
I know the Noble 8s don't get much attention though, I'm thinking it might be a better match, but not certain.
I listen to all types of music, but mostly rap, pop, rock, and classical at times. Some metal, one genre I never listen to is country. I wouldn't want to lose any bass going to a K10. I use eq all the time though, so if it is capable of the bass of the 8s, I could be very, very happy. Ironically, these would be my bass "light" IEMS.