directx or GL?

i know its i big argue ment around the place, but i gonna teach my self directx or GL, but what are the cons and pro''s? these are the 1''s i can think of, if ene 1 else has ene ideas cons/pros, please post em here 4 me so i can decide on what to learn... directx ------------- seems more complex coding or harder to read the code, does all the matrix stuffs for you, like rotations transformations etc... can be used to get inputs and do network code (not just d3d) not as powerful as GL openGL ------------- simpler to understand, but you have to do all the matrix maths your self, need other methods to get inputs and do network sounds etc... more powerfull that sound right? ene otheres plz post