I want to add that I'm stunned to hear just how closely tuned the Enigma+ and Titan are to each other. I have mine set up with the exact same filter nozzles and ear tips, and if I wasn't comparing them A/B back to back, I couldn't tell them apart. Not only do they sound virtually identical, but they are essentially equal in performance capability.
I just find this incredible, since they have different driver sets. I thought Enigma would sound much different due to the MEMS and AMT drivers, but the two IEMs are very similar.
Overall Enigma+ has a more refined sound, more soulful vocals, broader stage (especially taller) and better layering. But only noticeable by direct comparison. Bass is identical, maybe Enigma+ has the edge in fullness but it's so close I may be only imagining that. Mids are clearly in Enigma's favor, they are glorious with zero glare. The vocals have more warmth and clarity; words are more easily decipherable in the mix. Treble is where Titan has the edge, which I'm guessing is due to the quad ESTs. Titan also seems to have an edge in coherency too, which could either be due to the drivers themselves or possibly just that my Enigma+ isn't fully burned in yet. It's a small difference at this point, but again it's only noticeable with a direct back to back A/B comparison if you're looking for it.
In my opinion, Enigma+ is the best IMR offering I've heard yet. If it rates a 10/10, then Titan is a 9.5/10. They're so close that it's actually shocking. They vary mostly in presentation and mids quality, but it's more of a nuance than a concrete difference. Bob had told me a while back that they were at the same level of performance and that Enigma would possibly offer "something more". I think he was 100% right on both counts.