I strung my Prestige Mid at 61 lbs., ALU Power on the mains, synthetic gut on the crosses  (I had previously used these strings but in reverse -- ie, the synthetic gut was on the mains and the ALU Power was on the cross).  At first, this new set up felt like I was hitting the ball with a brick.  Despite exerting a tremendous amount of effort, my balls were barely going past the service box.  It was rough getting used to. Eventually, after about maybe thirty minutes or so, the strings started to loosen up and it didn't take quite as much effort to hit the ball long. Still not much feel on the volleys, though. My friend did note that my balls seemed to arc more than they did before, but I'm not sure if the added topspin was a function of the strings or changing the shape of my forehand to generate more topspin.  Anyway, I'm still getting used to this string job.  My arm hurts, but I also played a lot of tennis today so that's not necessarily the string's fault. However, based on my experience, I recommend tensioning this hybrid lower than 61 lbs, especially on an 18 x 20 string bed like that of the Prestige Mid unless you don't have a problem feeling like you're hitting the ball with a brick for a bit.  One good thing --  the strings didn't break at this tension.  That was exciting because so many people complained about breakage with the ALU Power at high tensions.  I was really wacking the ball, too, so maybe ALU Power just has a bad rap at high tensions.  Well, I guess we'll see as the week wears on...