ucsf2012, fortun8son,
please bear in mind that i am really kidding now, but at the same time i am very serious
.
my body and especially my shoulder seems to be very anecdotal.
i happen to play with a stiff stick, the mantis 300 (ra 70 unstrung!) and obviously also a very stiff string in the mains (the mantis power polyester). even after a tough three hours match or a really heavy practice session of 2 hours i have no issues with my shoulder. the match i was talking about went over three long sets and i surely had more than 200 serves (first and seconds) executed. my anecdotal shoulder did not bother.
the funny part of the anecdote is that with a definitely more soft stick, the head youtek radical mp (ra. 59 strung!!!!) and a much much softer string, the head sonic pro, strung at 23kg (that's 1 kg higher than i string the stiff mantis!) i had to stop playing after one set of doubles - happened to not have enough sticks around so i had to borrow one from my doubles-partner.
now i ask: how does that correlate with the lab tests my dear friends? life seems more anecdotal obviously than scientific.
i understand the reasons behind these measurements and i agree completely about their usefulness. i confess to regularly look them up too, but in my opinion what they say is that if a string measures stiff it MIGHT play stiff, it is not sure it plays stiff. there are more variables to put into the equation in order to make such an "educated" guess.
what i mentioned earlier is the missing of a very important factor, and this can only be evaluated "empirically" or "anecdotally". strings, specially polys go dead as we all now - that is they lose their resiliency. some sooner, some later, and this timespan is obviously very much determined by the not so anecdotal swingspeed of the player!
so now i ask: my dear ucsf2012, what do you do with a soft string that goes dead in two hours of hitting and than plays like a board and stiffer than kevlar? and gives you pain and whatever you actually don't want. a string initially measuring stiffer but keeping it's properties for a longer time is definitely in my anecdotal take much healthier than the soft string gone dead. where do you read these data in either rsi or tw-univeristy measurements?
i repeat myself - i consult these figures too and find them "informative", but
i would not really issue a recommendation based solely on those figures without having played the string! that is all i'm talking about.
and the issue with the op is that a lot of strings he has recommended in the past he hasn't played at all but just picked some readings from these charts.