I love Gel Res tennis shoes so, while not able to comment re your affliction, I will say the 4s are very similar to the 5s and are tremendous value right now. With the right inserts I'd wager on them helping but injuries and their prevention are always slightly different from person to person.
Yonex E-Zone 100. 3/8. Yonex Poly&Multi@57/59
B7. Tournagrip XXL.