I am not sure if I want to buy a stick edger of one of those fancy disk thingeys that attach to trimmers. I can see that the stick edger might have the advantage for first time edging because of the actual blade. But which one is better for the actual every week maintenance edging? (not the initial edging) Does the blade still cut the grass pretty good even when it is just grass, not a whole lot of sod? The disc will cost about $70 whereas the stick edger would be from $250 up but money isn't really the matter. I just want the equipment that will do the best job. What is your advice?