I agree with KC on this one. I've been rotating between the Fusion and the Mach 3 for the past few weeks now trying to see if the Fusion is actually worth the extra cash. I honestly can't see any difference in the two. I do notice a slight difference as far as the Fusion giving a more comfortable shave. But very little. Not enough to justify the crazy price difference. When I say "comfortable" I mean it seems I get a little less drag from the Fusion but I notice if I just take a little more time with the Mach 3 I can get just as smooth and close of a shave. The main thing I look for when I'm comparing the two, other than a comfortable shave, is how long I can go between shaves. I have noticed no difference in either razor. My head stays smooth just as long with the Mach 3 as it does with the Fusion. So as far as the Fusion cutting closer or getting more of the hair, I don't notice it. I've decided that after I'm done with this last Fusion cartridge I'm going back to the old Mach 3.