Interesting. I spoke with a Dunlop rep at Race Tire Service, and he suggested the Daytona 211GP.
I couldn't find a Daytona take-off at the time, and I wanted one that had been worn and heat-cycled. I ended up with a set of 6680s.
Then I found a set of wheels with trackday 7704 (med) 211GPs mounted, metal stems, and bought them too, cheap. I will take them as backups.
But I'm still looking for a worn set of Daytona takeoffs. The road racers I've talked ot tell me it will be hard ot find them, as Daytona is very hard on tires, and in any case the tires are often asymmetrically worn.
So hopefully the 6680s will work fine for my relatively slow, naked 1000 this year.