I heard the HE1 a few months ago, I wrote about it in here. It was the most natural sounding I have heard of anything ever.
But it wasn't perfect, it had some issues, I was looking out the window getting board a bit at times. Stats lack impact and dynamics to me, not as exciting.
The light was on for the tubes, this unit had some fizziness, bubbling going on, in the really thick but large sound stage, maybe it was the tubes.
I liked its sound stage a lot but I also like what the LCD4 does where the imaging is perfect and sounds seem to come from all around you.
I feel part of the music, the HE1 was more distant and not as involving but still probably the best sound stage.
I really like the Audeze "sound", I think the LCD5 may beat it (but not in price I hope), things are progressing fast.
The 009 was the first stat I ever heard a few years back, it wowed me the first 30 minutes with its hyper detail but then started sounding too artificial.