It appears that the real difference is the N97xE has an aluminum cantilever and blue brush assy, whereas the N111E has a boron cantilever and black brush assy.

The brush is not just a dust brush. It stabilizes the arm and helps the cartridge track light warps, damping what would otherwise be subsonic signals that would really push your woofer cones around.

Since generics lack this stabilizing device I do not find them suitable replacements.

Ed Saunders (ebay ID edsaunders) who has the V15 replacement stylii (and they get good reviews) told me in an email that he will very soon have a N111E replacement.

Since I have found the N97xE works, I'll use it and hoard, I mean "archive" my N111E's for a rainy day.