I did some quick side-by-side swap comparison SolP with stock pads and maybe like 24h burn in time vs Susvara burnt in at last with this Quobuz song example out of Roon to HQPlayer
To make it short: I found that the SolP retrieval of spatial cues being presented in this song with the coming and going background noises and voices around your head and the sound signature for the voice of the singer is closest with the ORATORY settings I ve posted before, with the other settings it appears relatively subdued on top (which seems to be the stock tuning as discussed before)
There are still signature differences between the headphones even with PEQ applied on SolP, I'd say that Susvara has some light melting on top and might be also slightly more textured than SolP and slightly more detailed.
With the ORATORY PEQ applied I find the SolP a tad clearer (maybe due to the slightly less texture) and more revealing in terms of the voice being more into your face than Susvara (all with the mentioned PEQ applied)
It is also appearing more full-bodied than Susvara.
Some last words before going to bed now: as some of you mentioned already less is more and always trying to somehow technically tweak one headphone to sound closer to another might not be the the best solution for the tweaked headphone.
I have now been listening to the lighter PEQ of DarginMahkum and stock pads listening to mixed Indie out of Roon-Radio and found it really good.
That's anyway an experience I've made with other headphones before:
After your brain adjusted to some sound signature, you can enjoy the music without needing to nitpick anything.
I've done that with Susvara before too enjoying it's superior vocal presentation and once in Rock'n Row mood taking TC out and in that moment not questioning the missing vocal timbre.
Up to now listening to SolP I feel I am not in need of switching headphones as much as before for listing to both vocals as well as RnB, Rock, Metal, Indie.
Jazz, Classical still to be evaluated.
Past 1 AM here - good night.