Isn't it all about what a person likes and their priorities? Both approaches are great and both are right. It depends on one's priorities.
The headphone fanatics love the clarity, surround, etc, stuff that they need. My max involvement in headphones is the Grado SR80. But for me - I like to "see" the magic forming in front of me in thin air between, around and away from the speakers! Your headphone system seems to be fantastic - pursue that (and if needed, upgrade). No point in spending money in a loudspeaker system, unless you can afford both.