I have two Quakers and I love them dearly but they can be a handful at times. They are very smart, funny and can have an attitude when they wish. They attach usually to one person and can be very possessive of their person and not want to share you with others human or bird. They can show some cage aggression (possessiveness/ no intruders welcome inside cage) but so can other birds. My two will let me do anything to their cage unless they find it scary then they will be unhappy.
They each have different quirks with scary things. Their diet needs to be chosen carefully due to risks with things like sunflower seeds. They are a big no no for Quakers. They also can be so sweet and lovable and they get so excited when they get to be with you.
Do some research and see if you are up for a big attitude small bird. If they sound good to you and you are up for their perks and quirks you have your answer! I do not know anything about lorikeets specifically so I can't make a comparison. I have budgies, cockatiels, one green cheek, Ringneck doves and the two Quaker girls. I would have to compare attitude closest to a conure but again it's a different bird and they are not the same at all except they are a lot of bird in a small Package.
I wanted to note that our two girls love/ are bonded to two people in our family. Myself and one of my daughters. The other two human girls are tolerated at different levels by the Quaker girls and they tolerate my husband but none of them are willing be friendly with the Quakers after the two birds made it clear they didn't really want to be friends with them. - I'm sorry if I'm rambling or don't make sense. Tired.