you have to know the bird you are getting. They can all be nasty, and they can all be loving. It is up to you to either get a trained bird, or train it yourself. Birds can also be very noisy. I love sun conure, but They scream when you just change their food/water bowl.
You should talk to rescues, and bird shops/not pet shops. See what is best for you. Also do a bunch of research online. The info is there, you just have to seek it out.