i honestly would never use blades ever agian they do f**k you. round studs are better. 2 lads on my old football team have taken a corner and the way they kick the ball they pivot causing the blades to stick in the ground. they ruptured tendons in there knee. personly i hate blades i blame them for the way my knees are. i used them once i turned to shoot and they stuck in and it hurt. round plastic moulded ftw