I've done the Fraxel Dual twice with 1927 setting. Im happy with the results. And Im also now experienced with the recovery involved. However, now I'm about to start a series of two treatments with the 1550 setting. I know that the wavelength goes deeper into the skin. But what I'd really like to know is: 1) how does the recovery differ from 1927? 2) how do the results differ from 1927? I have no acne scarring & only light wrinkling so curious whether doing the 1550 treatments are worth it.