I think the Susvara is a great headphone, but I prefer the Abyss overall and it gets most of my listening. I also think the Wa33 significantly improves the mids on the Abyss, while retaining it's other characteristics that set it apart from other headphones: Sound stage, Speaker like presentation, detail, imaging, tactility and thundering bass. In my opinion, if I could only keep one - it would undoubtedly be the Abyss - and I listen to all the genres you do. With Jazz and Electronic it's no contest. With classical, Abyss vs Susvara is a toss up, IMO. I also listen to alot of classical and prog rock - and I've said this before - Abyss is the rock headphone.
Also - check The Cable Company. They have a headphone lending library, They will loan you headphones for a reasonable fee, and apply it to the price of the headphone if you buy. I demoed the Abyss from there. I think they have the Susvara as well.