Shaving your junk

I just use a normal razor (3 blades I think?) and L'occitaine shaving cream. If the hair has spent enough time in warm water (end of a shower or bath) then the condition of the razor really shouldn't matter

What kind of razor works best? Should or shouldn't you use shaving cream?
 
is it ok to shave everyday? to keep it smooth and lessen the chance of irratation?