Ok, Im new to this zero turn, high speed mowers. Sorry if this has been talked about already, but can one of you more experienced folks give this old guy the scoop on which blades work best? I see three different designs for my Toro model 74245. The numbers I found are high lift #105-7718-03, Mid lift #105-7777-03, and a Atomic recycle blade #105-8777-03. Which ones should I get and why? Thanks for the help, Eric D PS I dont use it for commercial use, just my own place of 5 acres.