I work out with the limited free weight I have as well as resistance band when I do P90X . however , when I decide to start p90x2 , I want a better set of free weight that would provide I with a wider range . my husband have the PowerBlock 15-50 which he love so when I mention I need some weight that will not take up the whole house , he get I this set , 3 to 24 pound and it be perfect for I . the weight increment be small enough that I get really the perfect weight for each exercise . the change of weight be super fast and secure . I be a bit skeptical of the plastic weight pin , but my husband have have he set for a year now and even with the heavier weight he use , there have never be a problem and so I do not foresee any with mine either . Bottomline , I highly recommend this set for someone who need quick change , small weight increment , and space saving . the only reason I do not give it 5 star be because it really be very expensive . but it be well make and great quality .