Medication, what will help?

I recently was visiting with a new mom who smokes. During her pregnancy she was able to cut down to 5-8 cigarettes a day, but she was not able to quit smoking. Now as a new mom it has been increasingly hard to keep her cigarette smoking down to the pregnancy level. That is the nature of nicotine addiction, there will be a physical craving for more and more nicotine which means smoking more cigarettes for the same feeling of well being. She really is motivated to quit but is worried about whether she will be able to. She isn't nursing so she is researching which nicotine treatment medication that will best support her efforts to quit. We discussed various medications and she decided to talk to her physician about Chantix or Wellbutrin. Have any of you used either of these medications and have you any recommendations, or experiences that would help her decide what to take?