There is no best string for everyone. Different people prefer different gauges, different tensions, different finishes, different tones, etc. Unless you really hate the stock strings, I would play them for a couple of months. Then try something else and see if I like that better or worse. You may need to repeat a few times to find the best strings for you at your current skill level. If the original strings were fluorocarbon, try nylon the next time, maybe with a higher or lower tension.