I have seen several tips regarding keeping blades sharp and quality results, but as a newbie I am interested in hearing more on blade philosophy. Ie: high lift vs gators, blade thickness and ease of sharpening, modified sharpening, double blade configuation etc. Eric ELM has some great pics of these blades on his site but no real pro's and con's on the various set ups. I think it would play a big roll in acheving quality result and the effect it may have on the mower (wear, safty etc.). Any thoughts?