I string mostly for friends, neighbors, and team mates. One of my clients, a 4.5, really likes Wilson Sensation 17 at 58#, but he breaks it in around 5-6 hours. He plays with a Wilson BKLX 6.1 95 8x20. In the past I convinced him to try Sensation 16 and it lasted longer, but he didn't like the lower spin it generated and his TE flared up. I have also tried several poly/multi hybrids and his elbow couldn't handle those either. Gut is right out as he is on a tight budget, hence the need for a more durable multi. What multis are available that are durable, provide good spin, and are easy on the elbow? RIP? MCS? NVy?