My son is a 13 year old junior player. His skill level is comparable to a USTA 4.5 adult. He has been playing with Alu Rough and VS Gut hybrid. He told me that his racquets feel great the first day and then the string goes down hill fast. He plays for 2 hours in the morning and 2 hours in the afternoon. I did not believe him at first but after reading this forum I have decided that he actually knew what he was talking about. He has four racquets and I do not think I can manage to have them all restrung twice a week. He is partially sponsored by Babolat so the VS Gut is affordable. What string feels closest to Alu Rough and will last at least twice as long?