While a "species profile" can give some insight into a species behavior, remember that it will not necessarily apply to the bird you adopt...Individuals vary greatly which is why you shouldn't adopt a bird solely based off of their profile. Be sure to get to know the bird before adopting and ask lots of questions.
Green Cheeks are small, very cuddly birds and unlike other Conures they're known to be fairly quiet. However, their speech is limited and they may not speak at all, depending on the individual. They also tend to get very hormonal, especially females from my experience and any kind of touching below the neck should be avoided.
Pionus are very nice birds that should not be over looked just because of their plain colours. They love attention but are also fairly independent birds so are not too demanding of it. For the most part they're quiet, but of course like any med-large sized parrot are capable of loud vocals. Pionus speak a little, but not as much as other large parrots(or the hahns seen below). They also tend to be good family birds rather than bonding or preferring one person, however because of their independence they should be socialized frequently to avoid aggressive behavior.
Quakers are very unique parrots of their own Genus, they're known for their excellent talking ability. Quakers(in my opinion) are one of the most intelligent birds I've worked with. They can be affectionate, but not normally like a Green cheek. Quakers don't normally like being on their back. They tend to bond to and prefer one person, it's important to socialize them to prevent over-bonding and aggressive behavior towards other people. Quakers can also become very dependent and demanding. Quakers can be pretty noisy, but not too loud because they're smaller birds.
Hahns macaws are much like the larger macaws, except smaller and perhaps less flashy, but because of their size are easier to care for. They have a reasonably good talking ability, but they can also be reasonably loud. Hahns macaws normally have a willingness to accept new things(Unlike the Quaker, which I didn't mention hates new things) including toys. They're affectionate, but again not like a Green Cheek. Hahns macaws are outgoing, active and playful birds.
Don't overlook the Poicephalus parrots, though they're generally not very flashy they can be great birds if given the chance.
