Black caps are my fav conures, though I only know one. Try and see if you can listen to their voice online, they whistle instead of ‘scream’ like green cheeks. Blue the black capped conure learns incredibly quickly, large attitude, you treat him with respect and he takes no bulldookey. Not super playful but define toy plays and loves to destroy. He can be super cuddly. Have to watch making them too dependant on you, they often know exactly what to do to make you want to allow him to cuddle with you longer. I would take the pair!