I have worn the edt and don't find it particularly "feminine" on my skin. However, the modern and the vintage are quite different in the drydown as the vintage has a deeper and more animalic musk. Both are excellent.
I don't see the problem with wearing No 5. It is not a pure floral, it's a rich combination. It is certainly not girly. As others were saying, the edp is more powerful. The current edt doesn't last long on me.
Usually, for men, people recommend Chanel No 5 Eau premiere, a variant of No 5 that's a little lighter and more citrusy.
It's not sweet to me, but a strong aldehyde-floral-scent. If you like something like Amouge Gold Men or Rive Gauche Pour Femme, I guess you'll like it. You can use it home if you don't feel comfortable wearing it in public.
Guys can definitely wear Chanel No. 5. I wear the edp. If you want to be even a little more adventurous, I'd recommend Chanel No. 22 (Les Exclusifs), which is similar to No. 5 but more aldehydic and sweeter.
How many times has this been asked lol.....I think, yes a man can wear it BUT I would say only wear the current EDT all the rest are a bit to heavy and cloying. That is unless you are like me a could bath in No5 Pure Parfum lol
No. 5 is very aldehydic and brightly floral. That amount of aldehydes has been associated with womens' fragrances for the past 90 years, so generally I do find it is feminine smelling. I don't like aldehyde overdose in any form so I avoid it anyways.