Well, I bought a second hand 10% one (solid shift I think), well apparently it's Nismo. It's identical to the one in my car (except the one I bought has damaged thread), no Nismo logo.
If mine is a Nismo, I can't imagine driving without it so it's worth it for the feel. But if mine isn't then I bought a crap buy.
What do you mean by mis-shift? Not putting it into the gear properly or dropping clutch before the gear spins up and syncs?