Peeko is the sweetest, most affectionate pet I've ever had, and that's saying a lot. He's very comical and playful and he never fails to make me smile and laugh every single day. Before I got him I thought I was a dog person. I was sorely mistaken - I'm a conure person. <3 He's also very good with strangers and hasn't met anyone that he hasn't loved. He's extremely smart and catches onto things way faster than I ever expected, too!
Peeko isn't messy like parrots tend to be. All of his mess stays in his cage (which doesn't have a seed catcher). The only mess that ends up outside of his cage is a mess he makes when he's out playing. Maybe that's just him, though.
He's also very clingy in that if he cant see me, he starts 'yelling'. I say yelling because he can be much louder than he usually is, so I don't consider it screaming. But this is to be expected as he sees me as his 'flock' and wants to be with me. This is very manageable for me though because I'm always home and always with him. As far as general noise level, he can definitely get loud at times. Its manageable for us, but might not be if someone live in an apartment and has picky neighbors. GCCs are considered the quietest conure, but that's relatively speaking.
He can be pretty nippy, especially right now, since he's molting and has a ton of pinfeathers. He's angry with me if I scratch him and hit a pinfeather the wrong way, and he's angry with me if I'm not scratching him, haha
But he isn't normally like this at all. He is normally very gentle with his 'beaking' and its more like he's giving kisses than nipping. He's never actually bitten me, or anyone else.
As far as I know, there's no behavioral differences in the different color variations. The only major difference is price, depending where you get one. If you go to a pet store, you're going to spend at least twice as much than if you go to a breeder. Pet store birds can be neurotic depending on the size of their cage and how much attention they get (which is usually not much) so its a better deal all around to get a cheaper, friendlier hand-fed bird from a breeder (unless you feel that you could handle the potential behavioral problems of a pet store bird).