Females, hands down. Don't get me wrong I love my boys just as much as I love my girls. The boys have qualities I could do without though.

None of my girls mark, neither does Buster, but Charlie and Jake are big time markers. At the boarding facility I used to work at very few males didn't mark and very few females did.

My boys lick themselves way more than my girls too. I don't like seeing or hearing that. Telling them to stop 10 times a day can get annoying too.

Like GreyhoundGirl said a male's belly is less attractive than a female's.

My boys and girls are all very clingy, but I'd say my girls are more clingy than my boys. Nacey is my velcro dog, she is rarely 2 feet away from me. Nova and Bitsy always want to be in the same room as I'm in. The boys aren't as clingy as the girls, I don't have to be in their view at all times. I love that my girls always want to be with me.