The 5 blades really make sure that all the hair is gone. I prefer the 5 count because I want a quick shave and not have to worry about extra hairs wandering. The refills are easy to store than disposable razors. Also these last way longer!!
I got this because it said it was for sensitive skin. I haven't tried the other non sensitive products before. But I believe this did help with my skin. Personally I had to leave it on longer than stated. But that depends all of your hair texture and skin.