I have been using feather blades for the past year or so. I can get two great shaves with them and one decent one before it's time to toss them. I have tried Derbies, Personnas, Crystals, Swedes, and the walgreens brand but I can never get a good shave unless I use a feather. Then I read about astras and that they are almost as good as a feather. I ordered 5 of them on ebay just to try them out, and saw that they sell for 11 dollars per hundred online. Are they as good as feathers or good enough to use instead of a feather?