Schick Injector Question So, I picked up 5 injectors the other day at a flea market and have decided to get some blades and try them out. Got to order the blades as nobody carries them anymore around here. Anyway, I think I have a M1 Adjustable, a Grip, an I1, an E3 and a G8. I would like to know if there is any difference on how " aggresive" these might be or are the all the same? An since I've never used one, any tips on how to use them? Thanks in advance and enjoy your shave.