If you are dating younger, more eligible Colombian women (younger and prettier), you better have a little zip on the ball.  That's the bad news.  The good news is the game is over when the women's age hits 30 - OVER.  So, pick your poinson.
There is a curtain of inauthenticity you are likely to have to fight your way through in most cases in any city- the truth tends to be a little different, just as punctuality, for example.
I spent most of my time in Cali.  I found good women there, but it is not as common as you might hope - pretty damn hared actually. 
I remember one of my last nights there, a male friend and i was with a couple women from Cali.  One of the girls asked for a cigarette, I gave her my pack, and she took not one but TWO.  My male friend (who has a small harem of his own) observed this, and laughed out loud. He asked me if i yet understood the nature of women from Cali.  I shook my head, yes.