blades your disappointed with

The worst for me would be Bolzano. Felt like I was dragging a rake across my face. Feather Hi stainless would be the other blade for me.

Vokshod.
Astra SP is disappointing too, but the newer ones with the laser etching seem better than the older ones.

Tiger from Czech Republic.

It felt more like an old cat to me.. Tugging in the first pass itself.

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I have a tough beard, so I need very sharp blades. I have sensitive skin, so I need smooth blades.

Blades that do not work for me because they are not sharp enough:

Derby Extra, Shark Super Chrome, Durablade 7 AM, Merkur, Van der Hagen, Gillette Rubie Plus, Astra Super Platinum (I can use this one if I had to do so, but prefer not to use them)
Personna Comfort Coated (lab blue) on the first shave; as coating wears off, they work fine

Blades that do not work for me because they are not smooth enough:

Feather Hi Stainless- work for two shaves and then become too rough
Astra SP blades and Gillette Rubie Plus are not particularly smooth along with their lack of sharpness

What blades to you find both sharp and smooth?

This thread is about blades that disappoint. There are plenty of other threads about blades that are sharp and smooth.

The ones that haven't worked for me:
Kai
Voskhod
Gillette Minora
Feather (Short Lifespan)
Rapira
Ladas

Feather - Super sharp but I feel lacks the smoothness I need.

Tiger from Czech Republic.

It felt more like an old cat to me.. Tugging in the first pass itself.

Sent from my V2040 using Tapatalk

Who are you calling an old cat?

Shark

The QShave blades that shipped with my Futur clone were amazing on the first shave. Sharp, yet smooth.
The second use - not so much.
Third use - have to swap it out half-way through the shave.

I don't know of any other blade that starts out so well and degrades so quickly.

If I was the type to use a blade once and toss it, then I suppose they'd be fine, but I like to get 12 shaves out of a blade.
Why exactly 12?
Because I use a D12 to keep count.