Mmmm..
I'm still sitting on the fence, on this one.
Haven't yet received my Miracles (I'm hoping last week before Xmas, but am resigned to it possibly being after Xmas), so I can't do any auditioning of higher-end sources until I've got them in-hand.
I might pop down to London and pay AmpCity a visit, since as well as (ironically) being the company I purchased my UM M's from, they appear to be the only proper agent of HiFiMan in the UK.
In the meantime, I'm hoping an '802' or similar may not be too far away, though knowing how long products take to develop, I'm not going to hold my breath on that one 
Thanks again for your input (I have made the effort to hunt around the relevant Colorfly/HM801/HM601/2 posts in the 'archives', here on Head-Fi, BTW)










