Iam not a big fan of sun conures either. I would NEVER own one.
The loud earsplitting single note noise they make is enough to drive me insane!
They can be very sweet and nice but I would rather go with a senegal or any poicephalus family member for that matter. Poicephalus tend to be more "apartment" birds, they talk almost in a whisper tone and their actual bird noise isnt one that makes your ears bleed lol.
Ive fostered many senegals and brown headed parrots and I gotta say, they are sweet as can be.
Just be SURE that you can handle the noise a sun makes before you get him. I hate seing birds rehomed multiple times.