For the guys that own/use multiple Gillette Super Speeds: Have you noticed a difference in the shave that each individual razor gives? For example, if you have a '61 and a '62, is one more comfortable or shave closer than the other using the same blade type? Or is a '54 going to give a slightly different shave than a '62? Just curious to know what different people have noticed! I've already got 4 SS razors, and I've not shaved with any of them to notice a change. Still concentrating on technique. But I think I'm doing pretty good. Only 4 total shaves, and the last 2 were reasonably close with no nicks or irritation. Already loving a DE! I don't plan on ever using a cartridge again!