I'm new to wetshaving, and this is my first post. I've been shaving with an EJ 89L DE with some Derby blades (or as I call them, Derbs for short) for about 3 weeks. I haven't been fully satisfied with my shave (I still get redness on my neck), even though I've seen improvement through technique, so I bought a sampler pack of razor blades a few days ago. Hopefully I can find something that reduces my redness over the Derbs.
Question is, I've noticed that many brands make a blade in chrome, stainless, and platinum (e.g. sharks stainless vs. sharks chrome, etc.). What's the difference between these? They seem like they're usually the same price.