I wanted a girl...but the litter was two boys. I was very upset at first, but then started researching and found people were saying the boys were affectionate and girls could be moody. I've had a girl dog before ( a German Shepherd) and she was sweet so it seems to me it could go either way.
Anyway...I took one of the boys in the litter. I can't imagine having a girl now. He is wonderful, sweet and cuddley. I think it is your preference. Don't let the breeder sway you. You choose.