Looks like Sona uses a longer wavelength diode laser called the Alma Soprano which is probably going to be your best bet. I would go there providing they have experience with beard removal!
Ideal image uses the Alexandrite laser which is a shorter wavelength and probably not ideal.
Some good comparison of each of these lasers
http://www.realself.com/question/laser-beard-removal1Have you asked them if they've ever done beard removal, and what kind of technician operates it? Is it a doctor or just someone they hired? You want as skilled an operator as possible. Someone with lots of experience.
Excited for you! Good luck!
