I just recently got a sampler pack. I decided to use the Astra Blue blade in my Merkur 32C razor because I had heard good things. It the best shave I had ever had with my DE. I had only used Derby, Wilkinson Sword and Merkur blades before without any luck. I cut myself a little along the neck. However, I always do and this time there was no requisite razor burn as I got from the others. I can't wait to try the Yellow & O'Clock blades next.