Hey guys! My friend narrowed it down to these rackets which he will buy. He has already played with my Prince Triple Threat Bolt and he got the most power out of it than any other racket he tried. He hasn't tried the Gosen Roots Gavun Aermet 3400, 2400 and the Ti7 Light. Which would you recommend? My friend is an all-around type and plays doubles. His criteria would be great playability, he's also looking to add more power into his game (currently likes the prince bolt since thats the only one he tried but is willing to buy the others if they are better than the bolt), and the racket has to be durable and should survive the clashes common for doubles. p.s. He can't try the Gosen and Yonex rackets since no one has those rackets here in our place so he'll be relying on the recommendations.