I tried the blade in my Maggard MR1/v2, and the combination of that razor, that blade, and my face was horrible. I ended up with 3 cuts on my face on the first shave, more than I got from the other 4 blades I tested combined. I did that yesterday morning, and my face was too irritated to shave today. I'm tossing the rest of the pack,
I'm not a novice to DE, I used one for over 20 years, then when they started drying up in the stores, I went cartridge. I got a razor, and samples of blades for Christmas.
I like the Astra platinum best, I wouldn't toss out the Derby's, they work, and I get about 4 shaves, the Gillette green box Super stainless is not bad, but, it seems to only be good for 2 shaves. The 7AM surprised me, handily beating the Shark blades for bottom spot.
It was the sampler pack of 5 blades. The sampler pack is a great way to go, You'll zero in pretty quick on what works for you, and you're not stuck with a lot of blades you don't want anywhere near your face.