I have had many sets of the earlier Avon Azaro both on my Sprint and on my previous GSX R600.
I don't get very good milage out of my tyres for a number of reasons but the best I have ever acheived was on Azaros, the Storm's predecessor.
6,370kms on a rear, the best I have ever acheived.
They have good wet & dry grip and a neutral handling with average turn in speed.
The Storm has even better wet grip than the Azaro.
DaveM