The unique bend in the lip gives the Cloud 9 deep divers a hard and quick dive angle so it gets to depth quickly into the cast to keep the crankbait in the strike zone for more of the cast. In fact you will notice it fights a bit to come out of depth at the end of the cast when you get closer to the reel. The C25 throws extremely well. The C15 did tumble on an occasion or two, but I never had that issue with the C25. I think you have to be a little more careful with the weight transfer on the C15 and your change of direction when you are in your back swing and transfer forward to bomb a long cast. If you snap forward too much I think the smaller crankbait tumbles a bit. But if you flow more in an arc you won’t have that problem.