Echoceres :
i heard that SP fans is better for rads do you think i should go AF ? series
That depends, are you putting the fans on radiator sinks or hard drive bays (near stuff) or as a case fan (out in the open), if the former, static presure (SP) is better while air flow (AF) is better out in the open.
If you are likely to need to ever put it near stuff, get SP.