Can't say enough about the HeadBlade system
Every component of the HeadBlade system blows me away — from the razors and blades, to the lotions and creams. I've tried all their blades and for me, the 4-blade replacement cartridges seem to hit the sweet spot.  It's a much better, more comfortable shave than the 2-blade cartridges, but still very comparable to the more expensive 6-blade cartridges. They also hold up very well —  I can get 12 to15 shaves from one cartridge.
Rating: 5 stars