Overall the Bio Cell is a good driver. The feel on impact, the way it looks, both are standout qualities to me but it just isn't performing the way I had hoped. I took my 910 D2 out for a spin today and I forget how awesome that club is. It's almost effortless to hit straight bombs for me. So unfortunately, I think I may let the Bio Cell go to a loving home as it will just sit in my garage. I can see how it could really benefit someone struggling to keep the ball from slicing but more often than not, I have to fight to keep it right and that's just too much work for me. I really wanted to love this club and admittedly bought into the "newer is better" this time around, but it just wasn't the case for me. Good performer all around, just not the improvement I was hoping to see. Sorry for rambling, but just wanted to leave some input on my journey with this club.