One thing i don't like about galahs, is in all the videos i've seen they've seem like they are dull in personality. I mean, i know they are packed with personality, but i mean they don't show it well in the videos i've seen. Bandit from birdtricks is an example.
I am curious as to why you would say Bandit seems "dull"? I think he is hilarious and super cute, just full of personality. He is one of the birds that made me fall in love with galahs, back when I was researching them.
Anyway, you've had most of your questions answered for you already, but on the subject of noise I would say galahs are by far the most quiet cockatoos. I live in an apartment and have zero issues with Boris here. Granted some rosies do scream for longer periods than he does -- I get a couple of screeches out of him a day and that's it. He doesn't scream for attention, just contact calls (and it's not particularly loud or irritating). It's only bad when he gets excited and screeches directly into your ear.
He does well entertaining himself in his cage, but when he is out he is a pest. Always wants to get his beak into whatever it is I'm doing -- he has ripped buttons off my remote controls, stolen my cell phone, etc. etc. They're QUICK. And he has little interest in bird toys when he is out, so sticking him on a play stand usually does not work. He's very beaky, not in an aggressive way...he just likes to play with things and unfortunately fingers fall into that category. He does try to control himself and not bite too hard, but he gets carried away easily.
I think they are so smart and active that they get bored easily. At least this has been my experience with Boris -- not all galahs are alike just as not all people are.
I think when you meet the parrot that is right for you, you will just
know. Are you most drawn to galahs, or another species? For me there is no question I am a cockatoo person. The minute I first saw a galah in person I knew I HAD to have one, and at that point I had only ever had budgies. So I researched the hell out of them for months before taking the plunge.