my friend get the 50 pound Powerblocks and recommend I try the 24 pound one . I have have my PowerBlocks for a couple of week and use they with the p90x program . I love they . they be super easy to adjust , and the set-up time for lift weight go down exponentially . instead of have to move multiple set of weight , I just have to move one set ! also , if I find I choose the wrong weight -lrb- too heavy , too light -rrb- , they be quickly adjust . the 3 pound increment be convienent too . my only complaint be that I be not flexible -lrb- wrist do not be like it should -rrb- and sometimes my wrist hit the side bar on supination curl . other than that , I do not even notice the side bar . I highly recommend the PowerBlocks !