KuroKitsu
Headphoneus Supremus
That depends entirely on what you’re looking for in vocals. If you want a warmer, more natural timbre with a smoother, silkier touch - yet still have excellent resolution - the Phantom takes it. But, if you want vocals that are cleaner, clearer, crisper and more open-sounding - with a more neutral tone - then the Zeus is it. The Zeus isn’t iffy with cables at all IMO. The only pairing I’ve heard that I kinda disliked was with the 4-wire 1960s, because I felt it overtly boosted the upper-treble. The Zeus + Lionheart combo, though, is one of my absolute favourites. It makes the Zeus sound silky-smooth up top, yet vibrant and engaging in the upper-mids. The bass becomes less tight, but the touch of warmth coming from it really binds the whole track together in a cohesive and musical (not veiled) way.
I echo the sentiment that the Zeus-XR isn't a problem with cables. Tried it with Leonidas, Ares II+, BTG Starlight SPC (the "stock" upgrade cable when I got mine) along with various other configs like 8-core SPC. All add their own little splash of flavour, but none of them drastically altered the sound what is fundamentally an awesome sounding IEM.
Have to say, my favourite cable pairing after the Leonidas is actually the cheapest - the Penon CS819 copper cable sounds great with these.
These should be stickied.
Good news, my dealer should have the Zeus on hand for me to demo when funds clear up. Hopefully my Lionheart arrives by then too so I can bring it in and try it out with the Phantoms. Based on my Aries 2 impressions with the Phantoms, I'm leaning towards the Zeus. Talking about escalating quickly!