Sputnik blades have been in my permanent rotation for over 8 years and I just purchased a new pack of 100 from WCS.
They provide a nice, smooth shave on par with Astras, Gillette Silver Blues and Wilkinson Sword.
While not as deathly sharp as Feather Yellow, Sputniks offer an excellent shave right out of the package and I get five uses per blade, even with my tough beard.
I just wish they weren't made in Russia.
100 Blade Pack (Bulk)