I'm a 4.0-4.5, all court singles/doubles player and like my old Wilson Hyper Hammer 6.6 (rollers). But I'm 50 and have been having elbow problems over the last year- both golfer's and tennis elbow, which is rather wierd. I've read that head light, flexible, standard length rackets are best vs. tennis elbow, and my racket is slightly head heavy, 0.25 inches longer than standard, and a bit stiffer than what others have been recommending. I demo'd the Wilson nBlade and felt it lacked control. Looking at specs, I thought I might demo the Volkl Catapult 8v, Dunlop M-Fil 300, Head Flexpoint FXP Radical Team, PK Ionic Ki5. Any thoughts? Thanks!