I think that for your first cycle, Sustanon is definately the choice. Keep in mind that your first cycle is probably going to be the cycle that you get your best gains off of, therefore go all out. Stack your cycle with a little dianabol/anadrol, deca, etc. If you can afford it, throw some growth in there as well. In my experience, it helps you to keep some of the gains you worked so hard to make during your cycle. Good luck.