I love the MachIII. I also change the blade once a week without fail.
It is also very popular with the girls at "gentleman's" clubs (I know, I asked them myself
).
I also find that shaving creams geared towards men tend to have more "slip" than the chick ones. Both smell like crap.
Whatever you do, do NOT use the 5 blade FUSION!!! It has a nasty sixth blade on the top that is lethal. They should put a warning on it. I cut the back of my knee to bits shaving with it.