I think Berry Blue is no more, I'd stick with either Laser Pro gold or Shanti Speed! Flown both with positive results!! Dacron works for single line kites, stretches as the wind gusts and lulls, but wouldn't use it for any stunt kites!! Too much stretch and it will melt the good lines if it comes in any real contact!! And no Kevlar either, cuts anything else flying!! UGH!!