The advantage of fusion is a sword on the back of the blade head. This can be "straight line" drawn for example at the hairline in the ears a.
Who does not need the function for which the Mach3 blades or the Mach3 razors are perfectly adequate and bring an in my opinion very good shave.
The blades also keep a long time.
What I find cool is that these blades on both normal Mach3, Mach3 Power and on (with battery in it that vibrates).
