Have you tried effect audio leonidas with u18t?
I tried out the whole effect audio line except for Ares II and Ares II+, which I regret, but I was way too concentrated on getting enough time in with the janus. My impressions are that effect audio are a truly avant garde, some would say even sacrilegious, cable maker. What they make changes the iem-s sound quite remarkably, which is very, very cool in my book. And a slap in the face of anyone who says cables are just placebo etc. The changes to sound signature and even -- this is just a personal impression
-- timing qualities of the IEM change (faster, more dynamic at times). Now that may be super good for a lot of IEM-s, but the u18 is itself already extreme -- extremely fast, realistic, treble-extended. So the effect line times the u18 can produce some
too extreme combos. When the synergy is there, like with the janus, it's jaw droppingly impressive. But with the rest of their line, the synergy wasn't there.
To answer you, leonidas made them sound distant to me. There was oddness there, all kinds of strange. Eros was a little better. But definitely not a perfect match in my ears either. Also, the thor 2 gave them absolutely unbelievable bass. Never heard such a thing in ear or headphones. Beyond tight. Too distracting in the end, but here's that avant garde philosophy of theirs again: jaw rumbling stuff. Horus was too bright and lean for the u18. Janus basso was really good too, actually. Made them sound like a speaker setup where the two speakers are spread wide and facing inward a bit -- huge bass in the centre and an even wider soundstage than the dynamic. (Yeah, that wide). But the dynamic was deeper. And oh boy did it make electric guitars sound awesome with its lightning charged mids.
If the ergonomics were better it would be an instant buy for me, but since I don't see myself exiting the building with it around my neck -- I gotta deliberate a bit.
One last note: the ALO reference 8 is a very good, normal cable option for the u18. It has NORMAL written all over it. No dramatic changes to signature. Great detail, perhaps 2% or 3% more, at least felt like that. Liquid, extended bass that made them more forgiving even with the m15 module (no bloat). A little treble bite here and there that
may be worrying, but I didn't find a track that made them harsh. Just pretty treble. Normal ergonomics, a little stiff and people say microphonic, but hey, they're not an insane 8 wire like the janus. Also, normal price.
All and all it's the battle of the extreme vs normal in my head.
Too bad pw audio wasn't there. Would've like to try some of their stuff since the new designs look gorgeous.