On the subject of quality control, uniform weights, balances etc., between similar models, those who voice their opinion almost w/out exception put Yonex on top. I have never hit w/Yonex and see very few used, in fact know of no one who uses Yonex. I use Babolat. I am curious as to why so few people use Yonex, why relatively few professionals use Yonex and why among the pros, why women are the majority users. Aside from not having tons of $$$ to pay the top pros to use one, is there an oddity about the feel or other playability characteristic of Yonex that turns people off ?