Alma laser is a diode laser only and both have a great deal of clinical data showing how well they work there have been several published reports that the devices are pretty equivalent they both work and they both work well in  right hands,any laser can be great if the right person using it. Either device can produce great results but I personally recommend you the facility where medical director is onsite, even though both devices are safe for all skin types there are still the risk and potential side effects so be sure to have a medical consultation prior