i recall members on this forum saying that theres not really a shoe that can help much after a post ankle sprain, unless u are completely healed or at least near, then u should consider playing again.
as to shoes with good ankle support, i think u are looking at shoes that can lace to around the ankle or a strap that actually works to a large extent unlike ones that are only for looks.
I think ur looking at either the Lebron IV or Kobe II Strength/ Ultimate. I don't remember whether its the Kobes or the Lebrons where people were saying the strap was no use, or it could be neither.
Sometimes thin straps do the job, and thick straps don't, it really depends on how the shoe was designed to make perfect use of the strap. Melo M3s is a good example (if i'm not confused with another shoe again) of how a shoe with no strap can still offer great ankle support just by placing its laces at the right spot
Anybody willing to ID Kobe II, and then send them to Canada?, PM me for fee