obviously my #1 top wish/hope/prayer is for a healthy baby
after that... I would prefer a girl (I would be equally happy and maybe relieved to have a boy). I would love to have a girl to see DH interact with a DD, do all the fun girly things that I did as a child, etc.
I have two step-sons. I know boys. We know how boys are so it would be an easier process. DH is very comfortable about having boys.
I would like to have a girl because it would be new for both of us. DH already had children so sometimes I feel like I am just following the footsteps of his XW (I know that is silly and hormonal). I see how DH interacts with his nieces. He is a completely different person than who he is with the boys and nephews. One of my favorite memories is DH trying to explain to 2 y/o niece that she needed to keep her dress down (and not over her head).
All being said (and rambled), I would be just as happy with a boy. I am thrilled (and still in disbelief), that someday soon I will have my own baby of any gender.