Astra SP, Perma-Sharp Super, Personna Lab Blue and Gillette Silver Blues, to my mind are all "better" than Feathers because they offer a smoother shave, and more of them per blade. They are all much cheaper too. GSB are as close in terms of sharpness as I think you're going to get. All these blades can be used to great result in range of razors, something a Feather definitely does not!
There is however some redemption for Feathers. When you put one of these in a Gillette Tech or EJ89, there simply isn't another DE combo that I've come across, that offers the resulting shave, just as easily as this combination does. If I was in a hurry and needed a dependable, smooth result with no issues, this would be what I'd use.