I was looking at www.mowparts.com and came across the gator blades. They sound like they are a better blade than the standard mulching blade. I have heard some other people say they are very good. I was wondering if any of you have used the gator blades and what experiences you have had with them. I would be looking at putting them on my metro HP 48" walk behind. This mower already has exmark mulching blades on it. Was also wondering if the gators were easier to sharpen and if performance was better than the exmark mulching blades.