I usa discho iontec salmon 1.35mm on prince 100t ESP frame.I have never broken it, it plays great for first 3 hours and so and so for another 3 hours, then at 6th hour mark I cannot play with it anymore, it does not snap back anymore. Well,in fact it is still playable, it just lose its magic.
I'm an hard hitter, probably 4.5
Because I've leaded my beloved ESP frame, I need to string it at higher tension.I'm using 29kg ATM. I feel the racquet suffering while stringing at so high tension,and playing 2-3 hours at day I'have strung it already 30 times.
So: with a stiffer string, I should able to play at lower tension,giving lesser stress to my racquet,and a stiffer string should retain its playability for more time.
Discho big star tour is a new string made by Discho just few days ago. It should be a copy of luxilon 4g, the owner said that it has superior tension stability and it is stiff than usual poly,so he recommend to string it 10-15% lower than usual.
I would like to try it in full bed at 26kg or hybrided with iontec to soften the sttingbed.
It is sold in 1.20-1.25-1.30-1.35mm