yea well the way LikeTwilight put it, it makes sense,BUT, i don't think a producer should be mastering. maybe it's just me but i think that to make a good song the masses would like you need many persons with different roles. i don't get the idea of a producer being responsible for everyting in his track.take tiesto for example, he was named the greatest producer and dj of all time in a lot of magazines. people who like him and his music are millions. but a couple of month ago i read that he's not the one who composes his music, nor the one who mixes it, nor the one who masters it. he has just one role: make it, do the draft, put down the ideas. get it? and hes amazingly successful.so dude if u want to make something good people would love just focus on one duty, one thing. ur not super-producer-man. if u just wana toy around with a bunch of samples and some vstis on fl in ur room and make ur friends listen to ur music only well you should be the one mastering ur tracks. but personally id go for the successful choice.