Which one would be better to return with on?
Answers: it just depends on what your doctor says. .
I feel the pill is, but it's personal preference. From the accounts of most of the women in my human sexuality course the shot any loves you and you have no side effects or it hates you and you return with full-blown side effects that you can't get rid of for three months. I would start with the pill and if I didn't bring back any negative effects from that then try the shot conceivably next summer. It depends on your preference. Obviously, if you're terrified of needles, you should go with the pill but if you're exceptionally forgetful, then you may want to do the shot. :).
I think shots are quicker!