Thank you for the input, there is no doubt that the HE1000 is amazing, I just want to make sure it's the best choice for me. It's almost 2000USD here, so I need to choose wiselyI own the HE 1000 stealth and best headphone purchase I ever made! To me they just do everything right. Only the treble can be a little bright but once you break them in it gets better overtime
I appreciate your feedback so much, thank you! Since you have both of them, I hope you will answer one more question: When it comes specifically to imaging and sound stage performance, would you say the U12 is better than the HE1000?64 Audio U12T. Why? It has a high treble spike, sub bass boost with mid bass, slightly recessed vocals, and it has '3d like' imaging with excellent separation of instruments and layering.
From what I have read, IEM's have a hard time keeping up with OE Headphones in this area, so if the U12's are just as good, or better than the HE1000, they might be worth the extra 800USD they cost, to me.