which blade works best in really thick stuff? I have been told to use high lift,low lift,and one place even told me to use 2 low lift and one high lift. now im confused.I have a 3 acre field that I mow every 3 weeks. I mow with a 52 inch country clipper and want to be able to throw the grass as far as possible so it dont clump up under the deck. thanks for the help.