Male or female, I love them both! I would say go into a breeder (when you find one) with an open mind and pick the puppy that you like best and don't worry about gender.
For ladies, a male dog will worship her and be in love with her. For guys, a lot of them find a female dog to be their best match. However, my husband adores our male puppy and the puppy loves him like crazy. The female puppy we have is technically our daughters but it lives with us. She loves my husband. When he comes home they both go running to the door to give him kisses on his beard. I would say she is more affectionate toward him in that situation, but our male puppy will spend more time loving on him later in the evening.
I will take either. We have a 5 year old male English Setter (my husband's dog) and an almost 10 year old male yorkie that I took in 10 months ago who is strictly my dog. He does not listen to anyone else in the house. He does not love on them. He is my dog and only mine since the day I brought him home. He will mope about until I get home even if the rest of the family is home.
We were given a puppy, pick of the litter. I let my daughter pick the puppy and it is her puppy. We went in with an open mind but she took one look at the last puppy in the litter born and declared that one as hers. My husband and I tried to get her to at least consider the little male puppy that was a different color from his litter mates because he was such an awesome color and she was dead set on her puppy. My friend talked to me 2 weeks before we picked up my daughters puppy to ask if we would consider taking the small male puppy as she was having trouble finding him a home because his coloring was different and I had liked it from day one so she knew I would love him. We brought them home and it has been amazing!
I adore my daughter's girl puppy. Everyday when my daughter goes to school I come home from dropping her off and her puppy just lays on me and snuggles for about 20 minutes and then she is off and playing. My puppy is the world to me and he plays with his sister but as soon as he is tired he runs to me and curls up against me and goes to sleep. He is my boy.
So, if you are open to either, just pick out the puppy you like and love it. I promise you it will work out either way.
Some people are dead set on a boy or a girl and then they miss out on a potential perfect match for them. My daughter's puppy matches her perfectly. Sassy and loving and fun, just like my daughter. My puppy is a perfect fit for me, he is cuddly and loving and adorable. He makes this face at me when he wants something, like pouting almost. He is the only one of the 3 Yorkies that does it. It just melts me. I wake up in the night and he is curled up in my arms or nestled against the small of my back. He is a perfect fit for me.