My vote, know yourself and your bird(s). Mine are flighted, I believe birds are meant to be flighted. However this is something I think about all the time. My Ana Grey is a TAG and very willful she is always watching to see if I accidentally leave a door/window open. My CAG, Sterling Gris, is more cautious but will follow Ana Grey to the ends of the world. Know yourself and your home and family. Small children and a very active home can change how you treat your birds so think about it and your birds then make your choices.