I have been using these blades for some time now and they are just super sharp, shave smoothly and glide effortlessly over the skin. I would recommend a good shaving soap or cream and these blades just sing.
I only use blades for 3 - 4 shaves before tossing them in my blade bank.
They are super cheap in the 100 pack which is top value for a top product. Not as sharp as a feather blade but there is very little that I know that are. These blades just perform and do their job wonderfully well with little effort. Recommend these blades strongly.

These blades are so smooth and sharp, using it in my more efficient razors and I do not feel that I will get any irritation or problems from the blade as it glides over your skin.
Combined with a good shaving soap or cream, these blades simply glide over the face and just cuts the hair so easily. They are smooth and will give at least 5-6 shaves per blade and in the 100 pack represent great value for money.
I can highly recommend these blades for the more aggressive razors.

Great value for money. I get a number of shaves from one blade.

This 100 pack is fantastic value. I get 4 shaves from these blades, so that's over a years shaving for just over $20. These blades suit me and give an irritation free shave. However I highly recommend you get a Men's Biz sampler pack to settle on a couple of blades that suit you.

What more is there to say, these seem to be (along with the Astra Superior Platinum) some of the best value blades available and they give a fantastic shave in both my Webber and Parker razors. Mine came as what looks like a shop display hanger of 20x 5 blade packs.