I took Accutane when I was 18 (26 now) and I can tell you that it will clear up your spots, but at a price.
It will leave you with scarring (which I suppse is better than spots) but just bear this in mind.
Doctors hand this **** way too easily if you ask me, and if I had known more about it when I was younger, I may not have taken it.
I'm sure you know all the sides anyway, but have you tried tetracyl?
I still use this now and again if I start to have a flare up. It's ingredient is Lymecyllin, definately worth a try before accutane and many ppl have good success with it.
Hope this helps man.