Delphi Font Family, 4xOTF with Webfonts $69

http://www.myfonts.com/fonts/positype/delphi/

• Delphi grew from a logotype Lily Feinberg produced using Greek-column-inspired letterforms. As that concept expanded to include more and more letters, the typeface had its beginnings. Intertwined, kinetic, and deliberate, Delphi carves itself onto the page and screen, encouraging variation and experimentation. The letterforms’ unique construction and predispostion for experimentation inspired two varying sets: Delphi Dio, comprised of two-line strokes, and Delphi Tria, built of both 2- and 3-line strokes.
• With a design as elaborate, yet tightly tuned as this, the desire to add more and more was irresistible—you'll see a number of stylistic, swash, and titling alternates (and even more hidden away in further stylistic sets). Because Dio and Tria could only hold so much, alternate cuts were produced to better organize your options: the Delphi Alt fonts feature certain letter styles and stylistic alternate sets distinct from those in Delphi.
• Delphi’s sophisticated, striking letterforms make it an ideal display face for use at large sizes, and with so many unique details and alternate letterforms, it’s simply fun to use.