So I have a 48" Exmark Turf Tracer HP and recently put some high lift blades on it. I've been using mulchers for the longest time as I thought they were great and they help so much in the fall. So I fire that beast up engage the blades and had to look around as I thought a helicopter was landing or that my mower had become one and wanted to fly away Man that thing mowed like a champ today! I mean the grass isn't growing like crazy like it was in the spring, but I was mowing at 4-5 on the ECS and not missing anything! I'm not sure the lift of the blades that came with the mower and the mulchers obviously let air through. I feel like a moron not having used these sooner!! Definitely picks up those lazy blades of grass better. The only downside was that it shot the grass out the chute about 15-20 feet and around some landscaping that becomes problematic or just extra work of blowing the beds out. These blades stay on until the fall! Just my little story from today. See ya!