I do not know anything about smile design but stay away from Aspen.
Patients, Pressure and Profits at Aspen Dental | Dollars and Dentists | FRONTLINE | PBS
I am a dental hygienist but I just moved here a few weeks ago so I don't know "the scoop" yet. But I can assure you that Aspen does not have the patient as a priority. Reaching their daily business goals is the bottom line. It is a corporation that hires dentists.