Yonex nanoray 700rp would have roughly same specs. Its rated stiff. nanoray 700fx if you want a more flexible shaft. Nanoray 500 is also another option.
Non-yonex option would be Victor Super wave 36 - 4u, mid-flex, even balanced.
A bit cheaper would be yonex nanoray 80.
By the way, what do you think of airflow 5? I was thinking of getting it myself. Any other rackets you tried before you bought that?
Airflow 5 is actually good for defense and offense as long as you have good wrist action. I also find it's good for drives. It's designed more for women's. I do have 2 Yonex TI-10 3rd gen that I use also.