I've been playing the Bio Cell + now for about a year and have loved it. Struggle with too much spin and this was the first driver that got me below 3000 rpm. Had a chance to demo the new Mizuno and can't believe it. I put the weights in the heel and toe, which is supposed to be the lowest spin and launch setting. Having both drivers set at 9.5*, I launch the Mizuno about a degree lower and spin 100-150 rpm less. The best part is how much more forgiving it is. I alternated hitting the drivers every shot and also tried hitting 5 each before switching. My bad drives with the Mizuno were farther then most of drives with the Cobra. Now I have a problem. The Cobra has been very, very good for me and I wasn't really looking to buy a new one. But, the Mizuno is just better for me (at least on two separate days). Just wondering if I've missed something. Hard to give up a tried and true club.