yeahh... it's all about their own preference, some double player like zheng bo and jens eriksen do at very high tension (>30lbs)
Interesting to note that there are badminton players who uses leather grips (wonder who?). I thought only tennis players use leather grips for their racquets.
lolz anywhere over 23 lbs is monsterous...my ti-10 is at 21, and i'm afriad to go any higher for fear of breakage ><...my friend strung his at 27 and it snapped almost instantly...yet i get the same, if not even greater power smashes than he does...but tbh at 29 for his ti-10 is....*shudders* CrAzY!!.....
as mention before, snapping caused by misshit, if you have proper technique then misshit should be minimal. mine sometime use 30 lbs, no problem at all, just a little sore of pain in my elbow.
Can you tell us who? Also the string information is really helpull Ants I think you're the only one who know about this topic very well