I recently bought a sample pack of blades to try out in my safety razor. The first set of blades to be sampled were the Dorco Platinum ST300s. Honestly, the only reason I'm glad I started here is that everything will fell good in comparison. The blades suffer from an uneven sharpness that leaves you feeling a pull even when it's sharp. They're too rough on first shave, and though they do smoothen out, they quickly become too dull. You do get one half-decent shave per blade, but unfortunately, it's not the first one. I won't be using these again.