Just sent my UM3X away to be remoulded.
The guys at Unique Melody Australia are ridiculously helpful.
They even sent my audiologist instructions for how to get the best impressions - even she was gobsmacked, and told me that "No one else that has come here to get monitors made, has been this prepared".
I've opted for:
UM3X remould
Westone Clear Cable
Both IEMS clear, the right one having a Red tip, and the left one having a Blue tip.
It's more of a test, I work with a few teams of audio engineers and technicians, and I'm basically putting myself up as a guinea pig. If this all goes down well, we might get a few sets of their 8 driver, 4-way offering.
I was told the wait time would be between 5-6 weeks, and I'm glad they were honest - I wasn't expecting it to be quick.
I'll keep you guys updated, if you wish! (I'm based in Melbourne, Australia)