The last several years I've been using strings from
www.bowstringdepot.com
Hutch builds as good a sting set as I've ever had. Even better than Winner's Choice. He builds them to my specs which includes the diameter of the finished center serving. He's good on customer service, too. I remember him building me one that the center serving was too large. Being as I didn't need it right away I asked if I could send it back to be redone with smaller serving. He said, "Nah, I'll just build you another one". He was as good as his word and I had it in three days.