unless your doing all out smack 3D I doubt you would notice any discernible difference between carbon Edge tail blades and Kbdd tail blades or plastic Align blades either, I know I could not,
It would be different on the main blades as there is a lot more mass to be affected by the different blades so there will be a difference in feel between manufacturers.
I have the 60mm Edge blades on mine now as I wanted the 2 tone look that they give, but have used the Kbdd blades before and like those as well.
its what you can get hold of easily, if your blades got wrecked by the grass, check to make sure you umbrella gears front and back are ok, as they can be a bit fragile although the black one are better than the white ones were.