wow ..thanks for the replies folks...i didnt expect sso many so fast.i guess basically what im saying is,if you know your are against a made hand,i think there still are times it is a good call to draw heads up,i dont think from the odds i have seen and what i gather that a nut flush draw would be a good one,since it is about 4-1,but i would think that a nut open ended straight flush draw or a nut flush with 2 overcards would be a fair call..i know you are still and underdog,but i believe only slightly.this situation comes up very often for me.basically we wind up heads up and i have the draw....maybe im just overthinking it,because if the villian is all in,there would be no implied odds in that case.so i guess if pot odds dont dictate a call,i should fold....hmm....a minute to learn...a lifetime to master.