Hmmm, where to begin? As many have noted, GCCs are very comical...BellaBelle does things just to amuse herself but, if it catches my attention and makes me laugh, it becomes a much bigger part of her daily repertoire simply to elicit the laughter again.
-She is an adventurous eater and will sample anything she sees me nibble before offering it to her; though, she has distinct preferences and makes them known. It was effortless to switch her from the cheap seed diet she was on to a good pellet, Avicake and fresh food diet with a few seeds as treats and forage incentive. I have read that GCCs are messy eaters and will fling food...not so with BellaBelle, she is the daintiest of eaters!
-Being rain forest birds, I do not have any dust issues to deal with, which is a plus for me. Also, since GCCs like to bathe, I regularly take her in the shower with me and it's loads of fun. When she wants a shower herself, it is entertaining to watch her maneuvering to get herself soaked to the skin and adorable to see her blissful expression. When she is disinclined to shower herself, she still wants to join me and just perches on my head or the handle of the shower door.
-The expense for toys is practically nonexistent compared to the big beaks...as is the damage they can do to your person
-Affection from my conure is over the top; she makes me feel very loved.
-Many have said GCCs are big parrot personality in a small package...I'll add my vote to that. BellaBelle displays her intelligence and personality in so many ways. And, while I had no desires or expectations in that direction, she is starting to speak (and, in context)!
-Others have said GCCs are prone to nippiness, but that hasn't been my experience. Not sure if this is just BellaBelle's personality or, if it has more to do with my attentive observation...I am accustomed to paying attention to non-verbal cues from my background in pain management and, from my lifelong affinity for animals and noticed a learning curve when we were getting to know one another that saw the tendency to nip dramatically decrease. It really made me think that their reputation stems more from escalating behaviors designed to make themselves understood.
Okay, I'll close for now, but, will probably come back to add more as it occurs to me. Also, ask me any questions you think of...I'll answer what i can and try to direct you to someone more informed where possible. Glad you haven't ruled out the green cheeks!