I have been searching around for tires for my '70 CL100 cafe project. Currently it has a 2.50" 18" on the front and a 3" 17" on the rear. I have had very litte luck other than the chen shins that I refuse to run.
Pirelli Sport Demon tires are pretty nice bias ply tires.
Most of the Ninja 250 crowd in-the-know run them with very good results.
I run them on my wife's baby Ninja and have no complaints. In the twisties my bike will stay with any other sport bike large or small with no drama(sliding/wiggles etc.).
They wear even and grip well and give good feedback. They also come in a large variety of sizes for odd-ball/vintage wheel sizes.
I have always wanted to try the Vintage looking Avon front and rear Speed Masters,but they are expensive for what they are are I don't know how well they would perform? They sure would look great on a display/parade/show bike though!