Itunes or Cds, the smartest purchase?

Hi there, i was buying lots of cps before from amazon, lately i have been getting them from iTunes on apple lossless format, cause aim on graduate school and certainly don't want cds on the move, in a foreign country, either mp3 or compress formats either....
the dilemma appeared when i start questioning myself if what aim doing is the smartest thing to do, i also record some Cds after, on good music Cd no data.
they sound great to my ears.
Advice about this before i buy to many, back home i have several hundreds on storage.
thanks you always.