I believe most of the users here prefers their B3 over the KC06 (I assume this from their previous inputs).
From the early reviews it seems that KC06A is very close to KC06 for SQ. But wee need more brain/driver burn-in time to have more healthy conclusions from the users... But it seems to me from these reviews that one of the biggest issues on KC06 didn't change: sound-stage depth.
I have jumped over KC06 and bought the gold version. I have burned it and gave it many chances.
In the end, I returned to my B3 Pro1. I am on a trip now and it's the only iem I take with me.
There is no way that I am going to jump over KC06A... Not a single chance!
Also I am suspicious from your every input of nearly all the iems as: epic, toptier, wow, best, etc. I have seen these many many times. Just calm down boy (or girl I don't now).
You have great affinity and love for this hobby but just relax! You're putting these things nearly every night even when you sleep, don't you?
Give your brain some fresh "SILENCE"