I have had female dogs all my life, and Couver is my first male. I would definitely say he is more loyal than any female dog I know. It might be just him. The only drawback to him was his constant humping at the dog park, but that stopped immediately after he was fixed.
I do however plan on getting a girl once we are ready because I have read so much about how they bond best. When I was searching for my first pup, I wanted a girl, but I fell in love with Couver and had to have him. I guess go with your gut. If you are set on a girl, it is worth the wait. Do what you feel is best