you threw so many iems my way I forget exactly which ones were my favorite but I do remember the a83s and I had a smile on my face the entire time I was listening. I would love to get my hands on a pair of those (insert dirty joke here) but with a wife and two kids the budget will never allow that. I did like the a73s a lot. I'd like to a/b them with my hifiman re400s. I'll bring those over next time.
Vince, do you ever sleep? it looks like you've been posting on here since I left your house @ 11:00 last night. You better get some rest before those guys with the funny white jackets show up at your door.
Oh, and I agree with your assessment of the he400s, I expected a better more rounded sound out of them, I'm disappointed in the upper mids, hard to listen to for long periods of time.