small bike tires

I'm looking for recommendations on tires for a cbr250r - it runs 110/70 and 140/70 on 17 inch rims. Currently running a supercorsa front and a diablo rosso ii rear and been happy. Thought I'd see what else is out there these days people recommend for the small bikes. I've been reading through cbr250.net and ninjette.org for feedback there as well.​Setup is track only, usual suspension/brakes/etc. No warmers. I would not say I am fast, but learning and improving quickly. Traction is key, but looking for some longevity if possible. If nothing else I'll probably get a rosso ii front and rear as the SC1s seem to be hard to find in the sizes I need.​Thanks for any input and happy to answer questions as needed. via /r/Trackdays https://www.reddit.com/r/Trackdays/comments/9qk4n5/small_bike_tires/?utm_source=ifttt