Anyone reading this thread probably has a harem of blades. Different blade sizes, styles, weights etc... I like to keep a nice mix of styles in there. however I sometimes get focused a peticular blade (recent addition). When i get back to the others I find the shave not like it used to be. Therefore I've come to the conclusion each blade design has it's own performance tendencies that must be remembered in order to provide a quality shave. Do any of you like to mix it up like me or do you keep the blades in your rotation similar?If you mix it up do you have any trouble remembering said tendencies?