Hey guys! at the moment, i play with a yonex Z-Slash racket. today in a training session, i played with a friends Voltric 80 and it felt way way better. i play both singles and doubles, like to smash and play fast. i am M 22 years old and play about 6 hours a week. my thought is to buy either the voltric 80 or z force. they are pretty similar i guess, since they are in the same "voltric"-family. what are the upsides of both rackets, maybe even downsides compared to each other? furthermore, i would buy my racket at http://www.directsportseshop.co.uk/ (no adverstisement, if its not ok to post this link, tell me or edit it out if u r a mod) and they offer to string the racket with various strings. which one suits these kinds of rackets best? many questions i know, i hope someone finds the time to answer them! thank u in regards.