[hugh3]

Fusion has six blades: five on the front and one on the back. I actually find the back blade "long-hair trimmer" to be really useful when I've forgotten to shave for a week.

I also testify to the "more blades is better". I had never had a decent shave until I bought a Mach 3.

[matwood]

The mach3 is great. Other things I've noticed about cheap disposable razors is the blade spacing. When they put the blades too close together it's a PITA to rince the razor after each stroke. The Mach3 seems to be the perfect balance between the number of blades and the spacing.