They had a junior regional here in town this weekend. A good friend of mine who owns a very large pro shop asked if I'd help him keep up with stringing. So, I took my Wise and packed my tools and went down to his facility. He pays $5/frame . I strung like 15 racquets Saturday in the 6 hours I was there and 10 on Sunday. The youngsters are really eating through poly. There is also a trend, they are hybriding polys -- I suspect mostly for colors they like. They also string their frames way too tight with poly...oh to have a young arm. Based on what I saw stringing this weekend, synthetics and natural gut will be non-existent in 20 years.