To the OP.
It could be possible that girls are cleaner in the house than boys. Our first boy is very very clean our second one is not. But we totally love both.
As I was looking after a biewer it was not matter if itīs a boy or a girl. And then I saw Zorro with his beautiful markings and his outstanding personality and thatīs was it what made my decision to buy him and not another one. A few motnths later we wanted a second dog. And because Zorro is a boy we were looking after a second boy and picked his halfbrother. There was a beautiful tiny halfsister for selling too, but we had her to spay and I thought this could be a risk because of her really small size. So we take Rambo with us and both boys together are very well.
Good luck in finding a puppy!