Sciton micro laser with profractional or Halo laser? 55 years old, had cystic acne until Accutane in my, left with scarring.

My dermatologist is just starting to do Sciton micro laser and is offering me procedure at cost. I have had problems with rosacea but under control. I am wondering which laser would be best. I don't want the CO2 because of the down time. I also am nervous about going to someone who is new to laser. They are a very reputable dermatologist office, however. Any information greatly appreciated.