Post over at
my thread but figured I'll post here too since the topic is very relevant.
Here are the results of the small shootout I did between Fourte, A18, Flamenco (with all switches up), W900 and Zeus-R-ADEL, the five that (IMO) are at the top of the IEM game right now.
Bass quantity:
Fourte >= A18 >= W900 > Flamenco > Zeus-RA
Bass decay (slow -> fast)
Fourte > W900 > A18 > Flamenco > Zeus-RA
Mid forwardness
Zeus-RA > A18 > W900 = Flamenco > Fourte
Smooth -> Textured
W900 >= A18 > Fourte >= Flamenco > Zeus-RA
Warm -> Cold
A18 >= W900 > Fourte >= Flamenco > Zeus
Treble sparkle/presence
Flamenco >= Zeus >= Fourte > A18 > W900
Soundstage width
Fourte > A18 >= W900 > Zeus > Flamenco
Soundstage depth
Fourte > Zeus >= W900 > A18 > Flamenco
I try to use less objective terms like "detail" since the technical differences between all five of these amazing IEMs mean nothing next to preference. I'll be hard pressed to call anything "the best" or better considering they play against each other's strengths and weaknesses.
That said, IMO the Fourte is absolutely stunning. Still would not buy one (I'm voting with my wallet and my wallet says no to the 3.6k price tag) but represents many things of what I want in an IEM. Can't wait for the future when the chamber technology is adopted by more companies at a much lower price point.