im 14 years old and am relatively strong. right now i play with a head liquidmetal universe (cant find how heavy it is but it is VERY light compared to other rackets). its also very big head-wise 710 cm/ 110 in. so since i cant find the freakin weight i just want to know the advantages of a heavy racket, light racket, oversize head etc. (and it ahs an open string pattern (is that hwere the strings are pretty far apart?) *note i have a big serve and am primarily a baseliner but come to the net when i get a good serve in. i like to use placement alot more than power.