Well…I’m hesitant to answer this question because I’m still in the discovery phase. The 4xx was my first hifi set. But I enjoy the soundstage and bass extension. However, I played around with the eq a lot. In the end, my favorite sound was a parametric eq modeled on the harmen target and measured by oratory 1990. I didn’t enjoy the 4xx with no eq as I found the low end inexistant and the highs too sharp for my young ears. I do enjoy keeping plenty of detail though, but the 4xx I found to be shouty especially with rock.
It’s probably worth noting that I listen to every genre. So something versatile that can handle electronic, hip-hop, and more intimate stuff like folk and classical would be ideal.