We've got some kind of an 50/50-ish arrangement over here. Uh... Let me explain.
So, we've currently got two different cages in use,
Miley's Sleeping Cage in the Birdroom, and
The Big Cage In The Living Room Downstairs.
Every other day, Miley's sleeping in her sleeping cage in the birdroom, and every other day she's sleeping in the big living room-cage.
The days when Miley's in the birdroom, Alaska's sleeping in the living room cage. When Miley's in the living room, Alaska's sleeping cageless in the birdroom.
During the days, they're free range inside the birdroom all the time, except if I have to go away (which isn't often) - if I do, I either cage both (Alaska in the big cage downstairs) or I put Miley in the big cage and leave Alaska in the birdroom.
When Miley's in the birdroom at night, she climbs into her cage herself to sleep when she's tired, and climbs out when she wakes up next morning. I never close the cage door.
When Alaska's in the birdroom at night, she flies/climbs up to the highest point of the sisal boing and falls asleep when she's tired.
When they're in the living room cage, I bring them downstairs at about 7PM and they'll eat a bit, chirp for a while, play a little and then go to sleep. Same for both. Then I bring them back up to the birdroom as soon as I wake up next morning.
Considering they're both only actually caged for a few hours every other night, I'd consider them as "pretty much" free-ranged inside of the birdroom
I love it. I'd hate to lock them in their cages more than I have to; when I feel like I need a break, I simply leave the room for a while.

...Come to think about it though, it
is a combined birdroom/bedroom and it
used to belong to me, but look at me now! They're driving me out of my own room!
Haha, no but really, it's great. I'd love having them free ranged in the rest of the house too, but we've got four crazy dogs, so that's not an option right now. Good thing the birdroom is quite big, and I'll soon be upgrading to an even bigger one!
I have somewhat birdproofed the room, though I wouldn't leave Miley alone in there for way too long, she's always up to trouble....

With the new birdroom though, I'll make sure it's completely safe first thing I do!
They're not potty trained, but once you're used to it, wiping poop all day really isn't that bad! ....At least
I don't think so!
I hope in the future Alaska will be able to be entierly cageless. She was, in fact, entierly for a little bit over a month, when I had to monitor her weight and make sure she was eating, it was just easier keeping her in the birdroom with me at all times during that month. When she started eating better again, I started putting her in the big cage every other night again and now it's all working out fantastically.

She did however do really well being cageless.
Miley, on the other hand, strongly prefers sleeping in covered cages, so she'll keep doing that of course.