I feel the meg-mo blades are a good investment to several reasons. 1. I'm getting a superior cut, aspecially in tall or wet grass, and my cut is our first priority. 2. before I stocked 2 sets of mulching blades and 2 or 3 sets of hi-lift blades for both my 48" Hustler and my 52" 23 hp Scag. Because the differance is in the disc and not blades I now stock only 4 meg-mo blades for spares at only $3.95 per blade. 3. I changed and sharpened my blades before everyday or two. I shjarpened the meg mo blades after 2 1/2 weeks,and we mow about 110 properties a week. These three reasons are giveing us better customer service and substacial savings in time and money. By the way we have already built a ocdc. Weve also got a bullrider sulky to make better time trimming with the flex deck. Have a great season from Riverside Mowing.