This is going against the general consensus, I think, but here's what I found out. The mailman brought my new props today and I had to try them out so I checked them for cracks or flaws, balanced them and spun them on. By the way, three of the props were almost perfectly balanced and one needed just a bit of sanding. My V1.1.1. took off like a rocket, hovered perfectly and flew like a dream....I felt like it was noticeably more responsive to the controls and faster both vertically and laterally. Also, I got almost 2 minutes more flying time on four different batteries...two 2200's and two 2700's. The only real drawbacks in my opinion is that they are just a bit too long for the prop guards and they are noticeably louder, which makes no difference to me. I am going to figure out a way to mod the prop guards and get them out about a half inch and keep on flying with them. I am totally satisfied with the product and I feel safe in recommending them to other flyers. Comments anyone?