Got a Valkyrie and it's simply the best IEM I've heard. Prefer them hands down over LCD-i4 and QDC Anole VX. This DD bass is awesome, timbre is very natural, vocals are wonderful and the Electrostatic driver does wonders, simply love this treble quality and energy. Separation is among the best I've heard and even soundstage is great.
I totally disagree with head-fi reviews about mids being recessed. I don't think they're recessed at all. Elevation/intimacy is just spot on. Same about soundstage. It has great depth and width.
Now I'm curious about Legend X with 2 of these W9 drivers.
I personally preferred the Valkyrie over the Legend X. Valkyrie is very sub bass focused, it rises very smoothly in the upper mids, no peaks or valleys. Legend X bass is too loose and out of control for me.