Help! ERNIE BALL ACOUSTIC STRINGS COD.3148 vs COD.2148

[Thiago Sousa]

Need a help to know which model I buy stringing.
What are the differences sneaky stringing below?

ERNIE BALL TITANIUMRPS COATED SLINKY ACOUSTIC LIGHT 11-52 COD.3148


ERNIE BALL SUPER SLINKY ACOUSTIC Phosphor Bronze 11-52 COD.2148


Thank you,
Thiago Sousa