I don't know anything about the Palomar or Sharplight. Nd:Yag is the wavelength of the laser. It's not a brand. The Diode is a different wavelength. I'm partial to Candela lasers, but it doesn't look like that is an option. The laser can effect results, but I think far more important are the settings used and the skills of the person performing the treatment.
Also, you didn't mention your skin type, but unless you have fairly dark skin (tan easily) I recommend you get treated with an Alex laser which is yet another wavelength than the Yag and Diode. Hope this helps some.
Edited by joben (03/15/17 08:21 AM)