Fair enough... See, I don't wanna be bitchy or something, but there is a difference between a "period" and a "decade" Just to get it straight, no offence
On a more relevant note... I voted for the 90's because I associate those times with some models that are generally considered "classic", like Cindy Crawford (my all-time favorite model), Eva Herzigova or Claudia Schiffer... And I like classic things, so voting in this poll was basically a sentiment-driven thing for me.
I also love the 50's, 60's and 70's because there was no photoshopping. Models looked genuine. For example, if you look at Playboy centerfolds from the 60's and 70's, you can see REAL women. The 1980's introduced a change in this matter, models started to look like perfect instances of feminity. And the 1990's/2000's were virtually plagued by digital photo editing Nowadays, all I see in men mags are beauty monsters, and not really women as they actually look.