I've been going to Overland Optical since I got my first pair of glasses in the 4th grade.
They provide high quality frames and lenses, comprehensive exams and a very fast turn around time on all products.
I have a very high prescription and getting contacts can sometimes be a time consuming business. I can't go right in and get them off the shelf.
The staff at Overland Optical knows this and always makes sure to call and have my lenses priority shipped so that I get them as fast as they can get them there. Usually overnight.
I could probably go to a different store and get a slightly cheaper service, but with Overland Optical I get personalized service in which they go out of their way to make sure that I'm satisfied.