I wonder. How much difference in weight , swingweight, stiffness can we really distinguish. i have a number of similair yet different racquets and i can feel the diff when i pick them up and play with them one after the other but after 5 minutes that feeling is gone and i play as always. to illustrate what i'm talking about. i have a Wilson tour 90, dunlop 200G, ncode 90, dunlop 300g. i have the same string and tension on all of them. the wilsons play exactly alike, i cannot tell any difference. the 200g is more flexible but that the only thing i can feel, swingweigth or weigth feels al the same to me. the 300 is lighter but after 10 minutes of play , i play just as good (bad) as with the others, just less control on volleys. but the thing is , the 300 is signifcantly different than all the others (40 grams less.) so i wonder how much difference does it all make, or to put it in a different question. how much difference does 5 grams of lead really make? is it in my head or real ?