I've seen a lot about "gator blades" on this site. I'm thinking that maybe I should change to them on my ztr. I'm a homeowner with a 3 blade, 48 inch cut machine, and I cut about 2 acres. What are the advantages of gator blades, and how much should I pay? Are they hard to sharpen and balance? The road next to my house is gravel/rocks. So, I frequently hit rocks with the mower. Will gator blades tear up faster than normal blades? I try not to hit the rocks, but it's almost impossible not to. Any advice would be greatly appreciated.