First second and third strings.
Review by Peter j. on 10 Jan 2021 review stating First second and third strings. Second and third classical guitar strings sound louder using fluorocarbon nylon strings, and they are slimmer, making them easier to play. However I still prefer a rectified nylon for the first string because vibrato is easier, and the sound is sweeter. I like the Savarez Alliance fluorocarbon nylon 542 and 543 R normal tension for second and third, and ProArte Moderate tension rectified nylon EJ 30.
On Savarez Alliance 542R - 2nd string (b) normal tension .0272