It depends, as with all things =) Some males, if neutered in time, won't mark, others may occasionally, and others will mark wether they are neutered or not. There is no guarantee that your dog won't mark, so perhaps a female is a better choice for you. Either way you choose, as an owner, you should go into the relationship with the dog knowing full well whatever the dog does, you will love them anyways and be prepared to deal with the good and bad responsibly.