Last year I used to go with 90 speed and 70 stamina for a long time... I don't think that I was able to get to many more balls than with my current setup (40 stam and 70-80 speed).
It seems like reaching every **** ball, no matter how high the speed and stamina stats are, is some special talent some guys have (Baghdad, Mack, ...) and some guys simply do not have (me

)