For me, the default answer to this question is Victorinox. I don't have a Vic Spirit or a Leatherman Surge, but I have yet to find any multitool scissors that are more precise and effective than the standard Victorinox scissors on 91mm SAKs and the Swisstool. I just checked, and the SAK 91mm scissors are almost exactly the same size as the scissors on the Leatherman Micra and Style CS, but those scissors can't be opened wide enough to fully sharpen them, whereas the SAK scissors can.
After Victorinox, I have to say that my absolute favorite multitool scissors are those on the original (pre-2004) Leatherman Wave. I didn't get one until after owing a new Wave for years, so I was blown away by how substantial the original Wave's scissors are compared to its successor.
The only other multitool scissors that I have used are those on the Leatherman Wingman, and they were terrible to use. They never lock without careful effort, and the thumb lever is about half as wide as it should be in order to be comfortable. And I'm not a fan of the thin stock they're made from.