It would be much more helpful to hear from someone who has experienced them both. None of my Suns talked before about 6 months or so. Also, when Quakers bite they tend to nip, where conures chomp and hang on, kind of like a bulldog. My Suns got along well with other birds and seemed pretty sociable, but the Quakers were always teasing the other birds, even Peggy Sue the Patagonian who was much larger than they. Conures are fussier eaters than Quakers.
Quakers learn faster than conures.
I'm not saying that a conure can't learn anything that a Quaker can, but the Quakers start earlier and pick things up quicker. 3 baby quakers at one time had a cage with doors that slide up and down. Most birds learned to open the doors, but couldn't step out of the cage while holding the door up. They also thought it was great fun to take their toys apart without damaging them, especially if I then re-assembled them. My baby Suns, on the other hand, never learned to get out of any cage, and tended to destroy their toys by chewing them up.