it works quite good if you are at the top tier fights as it will give you slightly bit of stats more..from power you dont get almost anything, but in the future will come handy.. so its a good invest for the future.. i will recommend you to stack them up and when you reach at a high power and fix your purifications quite good enough all purple/orange just stack all of them in your best gear with the best purifications inside, for example if you have 98% and more in the gear then go ahead and do it. but make sure you put them in the strongest gear.