Like JDMFanatic mentioned the ZK2s are for guards, that are fast and drive a lot, PG-SG. Perfect for those!
The AF25 is a shoe for all positions except PG cause it is a bit bulky and heavy.
I wouldn't pick the ZK1, cause I think that the ZK2 are even better!
IMO I would wait till July 12th and pick the Zoom Soldier!!! I would do that cause first of all it's an outdoor shoe with awesome Zoom Air cushioning, great lockdown , sick traction , lighter than all of the shoes mentioned above and it's solid like a tank! ( 4 stitching lines ). I don't think that anyone would disagree since the previous model 20-5-5 is a spectacular outdoor shoe!!!