Crested Gecko or bearded dragon?

[Gungirl]

Hey guys.... I need some help! 1 bearded dragon or 2 crested gecko's??

I'm looking into a new addition to our home but Im lost on which way I want to go. I have never owned either of these but I really like them both. I understand that the bearded dragon would be more $$ all around but other than that I don't know enough to make my choice. If you have knowledge that you want to share I would love it. Or if you have seen a good care sheet that is right..lol I would be interested in reading all I can. I have read some and got really mixed info so now I'm coming to you guys! I trust you more than I do Google!!

I'm looking for info on
Tank size as adults
feeding
temps
attitude

Thanks ahead of time for all your help!!!