I strung one up today using MG ZX. At first I thought it was a poly, it had a lot of coil memory and was very stiff, but when I tensioned it, it stretched so much I thought it was slipping in the clamps. My cleint was give a set to play test and give a review. I'll know in a couple of days how it plays. BTW I strung it at 60 lbs on a Yonex Vcore iX 100, full bed.