I do think males have a tendency to hike their leg in places you might not necessarily want them to - for whatever reason.
I've had mostly male dogs and I always have a problem with them "going" when I take them to someone else's house.
We had one female and didn't have that problem with her. My daughter has a male (neutered) Boston and he lifts his leg on EVERYTHING.
Our Rowdy is not neutered and he marks in the house. We have wood and concrete floors and he is little, he just sprinkles a few drops, so we can live with it - but we have not been sucessful in getting him to stop.
Our Rexy, on the other hand, was neutered at 6 months and he does not mark and does not go in the house.
We got Rexy a year after Rowdy and Rexy was soooo easy to break because he just followed Rowdy outside and went potty too. He "knew" when we took him out in the grass to "go". Anyway, my point is that little boys can be problematic - but we have one that is and one that is not.
Good luck on your decision - Rex & Rowdy love each other to pieces - oh they chase and growl and play fight - but they do EVERYTHING together and I wish we had gotten a second one sooner.