I thought the Merkur 37c was going to be my last razor, as it just works right, all the time.
The Parker now shares equal time. Both excellent natural shavers, fine balance, and I only switch them up for a little variety.
I could go with the Parker as my one and only.
Astra SP for me. I haven't done the super-extensive testing of some here, but I've gone through a dozen or more of the better regarded blades, and Astra gives me the combo of sharp, smooth, and long-lasting that makes them a clear winner.
Cheap is a bonus.
A toss-up between Merkur 37c slant and Parker Semi-slant. Neither are real critical of angle used, glide beautifully, and while I'm not sloppy, I don't need to "finick" a shave.
Not to mention super efficient close shavers.
For me, it's THE blade. Just as effective as any other, smoother first to last, long lasting, and even when at the end of it's run it gives fewer weepers than other blades at their best. Oh, yeah, and cheap.
Am only two shaves in with the Parker, but very impressed. I didn't think I'd like the long, heavy handle but it balances nicely, and it might just be a bit more efficient than my beloved 37c. It's a touch more demanding on blade angle, and it's audible, which was a surprise, but a good...