In shaving is the number of blades really important?
If you have particularly thick or coarse hair, be careful with multi-bladed razors. More isn't always better. With thicker hairs, the closer to the the skin you shave, the better your chances of getting ingrown hairs.
I don't think its all that important how many blades you have while shaving as long as you have a comfortable shave.
If your talking about the Venus razors, I'd say go with the one that fits you.
I didn't really think there was a different.
more's always better
Go with 5