I can see where Spiritbird is coming from. At the very least, visit some stores that will allow you to interact and physically hold the large parrots several times before you take one home. I held my first large parrot (well, an African Grey is technically a medium sized parrot) on Sunday which was about an hour before I bought one from another store. Prior to that I've had parakeets, love birds, and Conure (which prior to the African Grey, I considered large) but I think it's a little different experience with big birds.
Despite all my reading and video research, the one thing that you don’t fully absorb is how much large birds have definitely more of a presence and require more caution than smaller birds. If a parakeet bites, it’s like a pinch. If a love bird or conure bites, it may break the skin and bleed a little. When a large bird bites, most likely you’ll bleed. And, I don’t mean to scare you away from large birds. Biting shouldn’t be common but the potential for injury (especially if you have little kids) is there. Household members should either know how to interact with the birds or avoid very close proximity to them.
PS: And they make a bigger mess when they eat.