If you're looking for the classic guitar sound, you'll definitely want to try Augustine's Classic line of classical guitar strings.
The trebles are sweet and lyrical, while the basses are rich and warm. They're the strings that Segovia made famous, but with improved intonation and consistency thanks to modern manufacturing techniques.
The clear nylon, medium tension trebles are the same throughout the Classic series. They're made of a nylon monofilament resin developed by DuPont that produces a truly beautiful sound.
The Classic sets are differentiated by the tension in their bass strings. The Classic Blue basses are high tension, Classic Red and Classic Gold are medium tension, and Classic Black are low tension. The basses are all silver-plated copper wound except for the gold set, which is gold plated, providing an even warmer sound.
Augustine Classic Red Medium/Medium Tension Classical Guitar Strings, Full Set