I have both for around 2 weeks right now.
Sure, Sundara is more impressive in the separation, soundstage, and sounds cleaner than 560s.
But it sound less natural than the 560s, the hi hat and cymbal sound really metallic and become really fatiguing in the long listening session. Also acoustic guitar and piano kinda lack body in this headphone, but it is acceptable since it’s so detailed. Vocals are a little bit quieter here than the 560s but I actually prefer it this wat.
560s has more bass presence but lose on detail and separation by around 20-30%. Comfortwise, I prefer 560s over Sundara. Female vocal can sometimes a little bit shouty in 560s but male vocals is safe here.
I listens to a lot of instrumentals, like orchestra, acoustics and game soundtracks, and 560s sounds so much more natural in this genre. It gives more body and sound less fatiguing IMO.
Sundara is great on rock, pop, and more busy type of music but the high can be fatiguing.
560s is great on instrumental track or vocal with acoustic instruments.
So far, I’m thinking to sell my Sundara since I’m leaning towards 560s more.
Feels weird and stupid tho since Sundara is clearly “superior” than 560s.