So, after using up the pack of blades I found under the sink in my granddad's old house (Personnas of some flavor)(so far like 90% of what I shave with was once my granddad's), I got a blade sampler pack. It included Feathers, Bluebirds, Bic Chrome Platinums, and Gillette 7 o'clocks. First I tried out the Feathers in my Fatboy set on 2. The results were quite good, very smooth shave with no nicks and basically no irritation. Today I tried out the bluebird in my Diplomat, and gosh, what a difference. I probably got more nicks than I have in total since I started wet shaving. None of them were too bad, and the final shave ended up being pretty smooth and absolutely no razor burn, but gosh, what a bloody mess that was. Not using that combo again.