Welcome!
I think you could do a lot worse than Guerlain's
Derby, if you can track it down. It's fantastic, but hard to come by now and damned expensive when you do find it. You can read about it on Basenotes
here, and the Perfumed Court has samples up for grabs
here. I think it's great, wear it all the time, and I'm almost in my thirties. Just a couple of years to go.
Habit Rouge is a slightly softer, fruitier alternative. Still great and much easier to find, but I prefer Derby's rough edges.
PS I've sent you to TPC's original Derby samples, but they also have the reissue available so do click around the site. Mmm, god, it's such a great fragrance. I would love to meet a man who wore Derby!