Which gives a better cut for fescue grass? I bought a set of Gator Magnums the other day and liked the results for grinding leafs. It was a significant improvement over worn out standard blades on my Toro Z. I really noticed engaging the clutch, the thick heavy Gators take more hp. It slows down the motor for a couples then picks back up. The standards engage and doesn't really make much difference. I'm wondering if the heavy blades turn slower, but has more momentum is better than lighter faster blades with no momentum for cutting fescue or leafs. What are your thoughts.