You don't seem to be getting much action on this so I'll give an opinion. <SNIP> I'd expect the Durga to be comparatively rounder and darker sounding.
I'll weigh in too, I've owned both for tenor although my Durga was the first generation. I owned a Durga 8 and a JJ DV 8...a number of years back. They both have a "modern/contemporary" vibe; by that, I mean the mid-to-higher frequencies in the tone are out front.
The JJ DV 8 was easy to play, easy to control, and I would describe the tone as bright and focused. You recalled being limited in shaping the tone, and decided it wasn't versatile enough.
I found the Durga took more time to learn how to play it to its full potential. Not hard, but it was more flexible. It was definitely on the brighter side of things but had a nice fatness to the tone, some "weight". Its internal chamber design made altissimo within easy reach (as with the JJ DV), but the tone was fat. I wouldn't say more spread, but fat...more of the lower frequencies came through. I had more leeway in shaping the tone.
Workmanship/craftsmanship was beautiful on both of them. Between the two of them, I had a marked preference for the Durga. I would have kept it but I like a more Link-style mouthpiece, a darker bottom end.
Those were my experiences, hope it helps.