Quality: looks good, fits razor fine, Sharpness?
Sharpness: Cuts hair, but leaves knicks & Cuts on 30% of face
Longevity: I can't get past 3 shaves
Smoothness: Has okay feedback, but leaves blood and some scratching.
Packaging: Fine for a store brand blade
Try them once, maybe you have a better result, they just do not work for me. No other blade I have tried has cut and knicked me like Isana blades have in the same Merkur Razor.