Full discolosure - Shure sent me 3 of the cardioid version of this capsule to trial on a music TV show I was making which I was able to use to compliment the other KSM8 capsules I had on the show.
Since that, I've bought some of these Nexadyne 8Ss (Supercardioid) and if been pleasantly surprised by the lack of plosive uplift between the cardioid and supercardioid, and the linearity of the off-axis spill.
I think Nexadyne 8/S will be my capsule of choice for most vocals from here-on. This capsule is a solid and more versatile rival to the DPA D:Facto II.