Tried my second blade: Merkur that came with the 34C. Preferred the Derby that I was using on a Gillette Slim before I got the Merkur. Will now try the Derby in the Merkur 34C...tomorrow.
I've been working my way through a sampler pack of blades. Been using a Nacet Platinum the last couple days in my Merkur 34c and have had some really nice smooth shaves with it. On my list of ones I might buy in bulk when the sample pack is done.
Needs a bit of 'splaining - started shaving with the Bic this morning and it was tugging and just being horrible. Thinking it might have just been me, I reached for what I thought was a Shark SC to finish the session. It was also tugging, so I gave up on the first pass to find it was the Derby blade that was awful a couple if days before.
This evening I shaved again with the Sharp durablade and had a great shave.