The appeal of high-ball bouldering is all about the reward, the greater the commitment required equates to a greater reward. Therefore in order for this list to be legit, the problems must be true blue high-balls, still cruxing after 20ft.  Many boulder broblems are hard down low but with high easy top-outs, this doesn't fall under true blue high-balls definition.  Now we must be carefull to not include free-solos, the cruxing must be done before 30ft!! Anything past 30ft is clearly in the no fall zone, this equals major injuries and death!