I personally prefer the personality of the males. I have found they seem to be more loyal and affectionate and less mischevious. Now I am only speaking of those I have and have produced. I do not have a marking problem (or should I say they don't..haha). I did have a female that was my marker so it's more in the personality not neccessarily the sex. My stud shares his home with 3 other males. they run free in my house. the girls do but only when they have their panties on
It's all personal preference really.
Good luck!