Growing up, we always had female dogs. My Dad always said that the males mark all over and they're always trying to hump your let, etc....We also always had large dogs.
When I saw Teddy, I had no idea if he was a male or female. He was the only one of the litter with his coloring, the others were all "normal" yorkies and I fell in love with his colors and his sweet little face. It wasn't until I was ready to purchase him that the breeder told me he was a male. (it never ocurred to me to ask because I just fell in love with him). I was a little worried, but it was too late, I couldn't stop myself.
He used to try and hump the cat before we had him neutered, but that has stopped and he never tried to hump any people. He has never marked anywhere in the house or outside, and he was the easiest puppy I have ever trained - potty, tricks, etc....
I guess I'm rambling, but the point is, I was always led to believe that Male dogs were just more trouble than they're worth but I have come to realize that their gender has nothing to do with it. Its their individual personalities, just like people!