I would recommend getting a male and female but putting them in separate tanks, that way you can enjoy both sexes and it's fun to watch them interact with each other at a distance of course.
They are all so unique and I believe that their behavior depends on the individual beardie. Over the years, we have had 3 males and 2 females. I honestly can't say that one sex is superior to the other as they are all so different.
I had a female that never laid any eggs even though there were males in the house, some of them never do. But, she was the sweetest and smartest of any of the others. She was always looking for more input and picked up on things very quickly. Loved car rides, going to garden centers, being with us when we were doing yard work, in fact, enjoyed being with us no matter what we were doing. She loved showing off and being laughed at. She also played several different games and would dance to music. She even "supervised" when we were redoing our porch and wasn't afraid of any power tools, no matter how much noise they made.
We also have a very "mancho" male who is almost 9 yrs old. His personality is the complete opposite of the female that I talked about above. He is very determined and wants to do what he wants to do, when he wants to do it. Although he is our tough guy, he is afraid of thunderstorms and his eyes get HUGE. :lol:
Our other male is a little guy and is like a baby but is almost 7 yrs old. When he is shedding on his legs, he holds them like they are broken until the skin finally starts flaking off. We really have to cater to him a lot when he is a little under the weather.
Our other female is a big girl and can get a darkened beard when she doesn't get her way and is also quite inquisitive about things. When she is doing what she wants to do, she has gorgeous orange to red coloring and parades around with a smile.
I feel that puberty hits the males a little harder displayed by their dark beards, head bobbing and even foot stomping and springtime certainly messes up their hormones. Although one of our females used to do a "role reversal" when one of the males wasn't showing an interest in her and she put on a show just like a male would. It was a riot to watch.
All of them enjoy their cuddles and are very affectionate. They also all love(d) their baths and would stay in for an hour if I let them. So, I really don't feel that either sex is more loving than another. I think the way they respond depends on their background and upbringing. You can't go wrong with either sex, beardies are amazing creatures!
Good luck with your decision.