What is your all time worst blade?

Personna Lab Blues and I don't get along.

Gillette Yellows - thin and tuggy; I found Gillette Greens to be sharp and smooth.
Astra SS - blunt and tuggy.

Gillette 7 O’clock Super Sharp (yellows)
I usually don’t like to make negative comments about gear because it is such a YMMV thing.
I’ve used two of these blades for the last couple weeks and can honestly say that I don’t think my face can take much more punishment. I’ve not had a good shave since I’ve opened this box. 6 different razors kept proving to me over and over again that these blades just don’t agree with me. Luckily I have many other choices that work really well. Moving on...

Gillette 7 O’clock Super Sharp (yellows)
I usually don’t like to make negative comments about gear because it is such a YMMV thing.
I’ve used two of these blades for the last couple weeks and can honestly say that I don’t think my face can take much more punishment. I’ve not had a good shave since I’ve opened this box. 6 different razors kept proving to me over and over again that these blades just don’t agree with me.  Luckily I have ma y other choices that work really well. Moving on...

I thought I was the only one who didn’t like 7 O’Clock Yellows as they seem to be so popular.  While Zorrik blades remain my absolute least favorite, 7 O’Clock Yellows are certainly in that same box of blades labeled “Do Not Resesutate”.

The blades you guys are listing are heavenly compared to the Flying Eagle Chinese blades.

Just sharp enough to grab hold of the hair and not let go, but not sharp enough to actually cut through it. The only blade I've found to this point that I couldn't finish a shave with.

After the first pass I had to switch blades to cut through all of the stubble that the Flying Eagle didn't pull out, root and all.

I tried a second blade to be sure that I didn't just get a bad blade. The results the second time were the same as the first. They really are that bad.

Rockwell and Gillette THIN blades.

Merkur’s so far are my worst blade— but it was also my first so I’m pretty sure it was my technique and not necessarily the blade. At some point I’ll go back and try it again but I shudder when I consider it.

YMMV but i have the worst shaves with this 3

BIC Chrome platinum, Gillette Minora and Mekur

Ive tied dozens and now have a stash of about 2000......so the worst are Crown-really dull...all the cheap Chinese blades-dull and overal poor quality...Merkur-dull dull dull......Zorrik Platinum-terrible till I corked one that was the trick good 2-3 shaves after that.....Supermax Stainless-at best just a mediocre bladefor two shaves......Muhle-in my r96 Rocca 1st shave barely passable with B&M soap with irtitation......Derby Premium-Great 3 shaves-Derby extra dull mediocre blade.....Derby New USTA Blade-Really sharp what a surprise......

Kai stainless steel. Far too sharp for my taste.