Guys, I am thinking to buy a Yonex Voltric 70. The dilemma I am facing is to choose the right size / weight for myself. I know Voltric 70 is a head heavy racket, so my concern is "if" I go with the 3U version, it would be too heavy to wield. However, "if" i go with the 4U version, would I compromise too much power (the power this racket is supposed to generate)? I am leaning towards 4U version because it adds more maneuverability, and I think I would go with 4U version as long as it doesn't compromise too much power. By the way, I am currently using Carbonex 35 (even balance) and Arc SAber 002 (even balance) rackets, both of them are 3U. That's why I am trying to get a head-heavy racket this time. Can someone opine and offer me your valuable feedbacks? Thanks!