Big NKS Fan !
Many Thanks ! Makes sense now to also add FS I at next promo offer.FS I has three dynamic layers, FS II has only one: Loud.
Also, FS I has three timings: normal, tight, ultra-tight. I believe these reflect how rigidly they hit on the beat versus preserving the bowing sound that happens slightly before (hence the slight delay).
FS II has a close mic that's noticebly dryer, and a slightly higher player count on the low end. Also, there's some natural clicking/crackling sounds captured in the performance if you listen closely, and I haven't noticed that in FS I.