I also had very oily skin and moderate cystic acne. I tried every kind of antibiotic out there with not much improvement. Ortho-cyclen worked really well for a while, but did not improve oilyness. I have been on Spiro now for about 6 months and it has worked extremely well. My skin is not oily at all anymore, and I haven't had a breakout for about 4 months. My doc says it is a very safe drug, and the only side effect that I have had is having to pee very frequently. (Spiro is a diurectic). I would recommend that anyone try this drug before attempting to take Accutane, which can be very dangerous.
I hope this helps.