Well, I'll let you know within a few months.
From my limited audition time with Immanis at CanJam NYC, I can say it clearly performs on a higher technical level than Susvara. To my ears, both cans offer a balanced, organic, and coherent sonic experience, and are genre-agnostic. The Immanis has the more impressive soundstage and resolution. Note that while I could appreciate the technicals of the SR1a, I was never tempted to buy it, largely for the reasons you cite above. I never had a chance to audition the CA-1a.
FWIW, the 6moons review of Magna did have some comparative notes with Susvara
starting on page 8. Some people find his prose hard to parse, but I was able to decipher it. YMMV.