A good and valid post, hope to put light and mostly and end to it. The racquet i used previously was a 95 sq in hps 6.1(red/orange racquet). I beat my buddy 6-1, 6-2 with the 95 sq in frame. However, he had a spare tour 90 because he loved his wilson 85 original. I tested the 90 for two weeks and found the 90 to be as solid as a tank compared to the 95 i was already playing well with. My accuracy improved, and my serve spin and placement improved also. So, i eventually bought his and got 3 total. Now, i have even "upped the anty" of my game and the racquet by adding lead tape to where the one i am experimenting with is 13.5 ounces and has a mostly even balance to it(normally tour 90's are very head light frames. My game has shot up major levels again. And, my strokes and stroke production has NOT changed. However, i have let many people hit with both the not leaded and leaded frames, and 90 percent or MUCH higher say, 'how do U hit with this stick', or, "too heavy for me, i would get tired after a couple games'. These are the people the initial poster talked about. Arm swingers. And, in todays game, 'arm swinging' with these lighter frames is accepted, and taught. I have old school "federer, whom before that, was 'lendle'" strokes, and without the extra weight and small head for precision, the ball would tend to want to 'float" or 'lift' off my frame earlier and sail out. And, yes, you are right, when they see my strokes and then have hit with my frame, they know to keep their current whatever they are playing with, and realize 6 foot 2, and 195 pound physique and using the body, and not the arm, to make power, may not be coming around in their future any time soon. So, yes, you are correct in your warning about the frames. Just, hey, keep it on the down low!.. Cuz, i am waiting for that 5 foot 5, 145 pound guy to buy 3, all new, without testing them! Then, for him to hit with them for a couple days to weeks, realize he IS NOT ROGER, put them in his closet, then, a month or two later, realize he better get SOMETHING out of these frames, and sell them USED on tenniswarehouse.com classifieds so i don't have to pay FULL PRICE for what should be a minor change to the sweet spot of the racquet which will just make me a more deadly player and finally give me that nice kicker i need on my second serve. So, yes, everybody is right, and please, except for one stupid smallish dude, so i can get a cheap top notch racquet, DEMO your racquets BEFORE you buy. I will be anxiously awaiting for the rest of you suckers who do not!

p.s. And, yes, I will ALSO be demoing the newest ps, because i already know i hated the stiffness and relative lightness of the nano tour 90. It feels flimsy and lacks feel compared to the original tour 90 in my opinion. One personal reviewer said the tour 90 and the K90 felt nearly the same. And, if this is the case and i can't get any more spin out of my same stroke production, I will just retire with my tour 90's till i lose the flexibility and strength in my legs and trunk to make power.. so, I am thinking, 70 to 90 year old range, and then, it is time, for the thickest, lightest, 'newest technology', frame i can find!...haha