Let us shed some light on the composition of different strings currently available on the market.
If You're aRegular Player, Your priority will be durable strings (that resist breakage as much as possible) with power (meaning the strings return the energy of the impact). If this is the case we would recommend multifilament strings or natural gut strings.
If You Play Intensively: Along with durability and power, you will also be looking for your strings to increase playability (the strings actually help the ball to spin). In this case we recommend monofilament or hybrid strings.