I am currently using a Prince Airlaunch Racquet. It's a midplus "95" with 16x19 strings. I received the racquet last May without breaking the strings since, while playing twice a week. Should I restring, and if so what type of string should I buy? Should I buy Prince synthetic gut at 16, or the BB luxilon Alu? Also, what tension should I string it at? The throat of my racquet recommends to string it at 58 plus or minus 5 pounds.