My sun was a good girl at night. It took her a little while to learn our routine but once she did, she would literally every single night climb to the door of her cage and pop her head out to kiss me goodnight, and then climb back to her sleeping perch and sleep and stay quiet all night.
She did go through a nippy stage. Not all of them do but some do. It took patience on my part. She was really bratty at about 2 yrs old, but she outgrew it and was a really good bird. I got her when she was 6.5 months old, so she was 'easy' to tame and her brattiness was just a phase.
Mine had a fear of strangers when she was young and she bit almost all of my friends if they tried to touch her, but not me. She also outgrew that and learned more confidence and what was safe and what wasn't.
I won't lie and say my Georgie was "easy", she was a handful, but as she matured, she was so sweet and funny and loving, that she was worth the stress during her 'terrible twos'.
If you like that sun, maybe ask if you can handle him/her, find out a little more detail and see if the bird takes to you and there's a connection. That may make the decision easier. (Georgie picked me.....she wasn't even the bird i wanted...she liked me instantly.)