Another thing that a rescue has an advantage is that there are budgies, love birds, conures, lories, amazons, macaws, cockatiels, cockatoos, etc; you can get a feel for a wide variety of species. An
amazon isn't as likely to be cuddley as a cockatoo, they are all different. The rescue that I volunteer for, goes through quite a process to adopt a companion bird. One thing to think about is most all of those birds at the rescue, were raised, hand fed, from a breeder. There are several cockatoos at our rescue because for the most part, they are loud. That's how they are in the wild, that's normal. People find out that they can't get an apartment because of a loud bird, or they get tired of giving the bird the attention it needs and the bird may start negative behavior. It is a huge commitment to bring home a companion bird. When you figure your kids will eventually leave the nest once they reach adulthood, that might be 20 years. A bird can easily be a 40+ year commitment.
Of the 150 or so birds at our rescue, I would love to bring several of them home. They are honestly so sweet. I will say that there are also several that I wouldn't want to bring home and most likely they will have a lifetime home at the rescue.
If there is a rescue or sanctuary near you, try to find some time to volunteer and see for yourself. You will find yourself looking forward to your time spent with the birds and the birds will also look forward to seeing you.