I have 3 scars I am trying to treat. I have had one consultation saying to do the Halo treatment and the other saying to use 3-4 Genius treatments. Generally what treatment would provide the best results? All scars are relatively flat with small texture issues. I also have horizontal stretch marks on my back (growth spurt when I was little) which are very old and white, which I was also trying to improve during my treatment. Is it worth trying the Halo first and then Genius?