The razor glide very well on the skin, even without shaving foam and once the blade is not too old, it is very rare to cut.
The significant advantage of this type of installation is also a very easy cleaning of the blades relative to a traditional razor.
As against the blades really cost (too) expensive and I find that the passage of Mach 3, which was revolutionary different versions of the merger did not bring much.
Another thing too, I do not see the difference between the blades such as these and those specific to the power. It shaves as well, and for less!