Hi there! As you know, I've heard the EXT recently too, and loved it, with a few reservations concerning wishing for a bit more soundstage and separation, and perhaps a bit more air/sparkle in the treble. I loved how smooth and non-fatiguing it was too (except for the nozzle size!).
But its bass especially impressed me, not only in quality but in the fact that it just made basslines stand out on songs that I'd heard a hundred times before and never previously noticed. Made some songs so incredibly musical.
So with that in mind, and also bearing in mind that I own MEST Mk II, I'd really love to hear your comparisons regarding the similarities and differences between Indigo, EXT and MEST Mk II, if you have time?
Mainly between Indigo and MEST Mk II and between Indigo and EXT.
And if you can be bothered, perhaps MEST Mk II and EXT, since I didn't have time to compare EXT to my other IEMs due to being unwell at the time!
It's quite something to hear you saying you prefer Indigo over EXT, so I'm certainly intrigued!