I much prefer girls . . I love to dress them up I also love making clothes for them.
I have had three females and one male at in my home and have had issues with intact females fighting. It's a common incident with any intact males or females so that is something that you will need to consider if you have other animals in the home.
As far as training I've had it go well and others not so well but for the most part my four were very easy to train including potty training. The worse of the bunch was fully potty trained by the age of 1. I guess it would depend on the type of training you use. Our doors vs. puppy pads, do you have to walk them or do you have a dog run/yard. We did paper training and we also have a dog run both worked great. It's more a matter of consistency . . . you and anyone else in the home must be consistent with training all types not just potty training.
I have found that my girls were and are more lovey affectionate that my male.