Looking for terrific service? The folks at Spectacle know their stuff.
I've bought lenses at a quick turnaround competitor and while they are okay as a spare pair, there's nothing like having a quality pair of glasses (lens and frame).
If you're moving for progressive bifocals spend the additional money and go for a midrange Nikon or better lens. You won't believe the difference it will make. Anne at Spectacle helped both my wife and I, and we couldn't be happier!